I like it, but there are some imperfections.....I mean watching it carefully you can realize is not a real picture. But your work is very very good so I think you can be satisfied of it. I'd change the landscape which is one of the things that makes your rendering untrue, and the gold cup on the bookcase.....oh yes...and the red books.
Talking about the second rendering, the room with those big windows, I don't like the texture of the side of the desks, it looks like cardboard or chipboard. I repeat you can be satisfied, but with a bit of patience, your work can be perfect, even because most of the fornitures are rendered very good

.....oh my god.....
What is in your everyday diet..... bread and engineering???
Incredibly perfect

I've always thought SU as a good tool to draw houses, fornitures, trading centres, etc. I mean apart from the personal abilities, I think you'are really talented...I thought SU didn't allow certain kind of projects, like a professional Cad does...but I was absolutely wrong. If I've thought that about SU is not because I'm a professional designer hard to please, with preconceived ideas, but just because I've never seen such a good project of this type made with SU.
What you did is amazing

.... I have no words....
You deserve an award first of all for your patience
I like the renderings, but also the idea of your project...very very good work
"Ciao" Laura

@thomthom said:

Good to hear that it's worked out.
Though, it do sound you can benefit from some better hardware. Maybe a new card is all you need. It really depend in what your Sketchup usage is.

A new pc would be better
Unfortunately this is only an hobby..I'm not an architect or a designer and I've never read a SU tutorial, so my usage is an amateur one.
Thanks again for your useful advices

@burkhard said:

Two months ago I got a model with 118 MB and the client had the same problems. I have had reduced it to 1,36 MB without textures ( If he had let me finished some landscapes, I'm sure it would be under 1MB) Now it is completely finished ( by the client), including the textures and it is not more than 16 MB.

Purging and delete unneeded Geometrie reduce the file size only with 4MB.
After different steps with deleting textures, copying in a new instance and look for bad Geometrie I had success.

The most times I found that there is a lot bad Geometrie that forces Sketchup to long calculations which will multiplied with forthcoming modeling.

So, a new Graphiccard is just a short step in relation to a clean way to model.

I agree with you, who knows how many mistakes I've done, but I have this kind of problems even if I download any kind of model from the 3d gallery which is more complex...like an house, or a flat, etc.. As I wrote before, SU moves in jerks....even with modells drawn by others. I think this is due to the graphic card
If you have some time to waste, I'll be thankful if you could find out if my model has many bad geometries or not....but if you can't don't care about my request.
Thanks Laura

Ohhhh DONE!! DONE.... DONE!!!
You were right, pictures were too big, oh guys thanks...thanks...thanks
This is what I did: into the SU material menu i saved the pictures into another folder in Jpeg format, than I resized them into paint because they were too big for my model. If you see the model, on the desk there is a picture of a dog, the original one was a 7mpixel picture of 5Mb, an so were the other ones (4 or 2 Mb...too big). In this way I obtained pictures of the size I needed for my components and the right lightness (an average of 25 kb)without loosing quality.
This is the link to my model, if you want to criticize it...you can speak freely

http://sketchup.google.com/3dwarehouse/details?mid=f886e850336b4e31b8e852c598c76fe1&ct=mdsa

Veeery good...I like it
I'm obsessed by kitchens, and I can tell you that the things that make me realize that it's a rendering and not a real picture is the light on the left of the table, the centrepiece, maybe a bit the landscape outside the window (but only watching it carefully) and last tha main wall....you can see that the piece between the black paint and the cupboard is not well defined as the rest of the wall. But these are only details, your work is absolutly good.
Chairs are perfect.....
Laura

@thomthom said:

I got an ATI Radeon 9800 on my old computer at home. Still handles SU very well. Though, I'm not sure the difference between the cards.

Sketchupis known to have issues with certain ATI cards. And especially older drivers. You could be suffering from a bad driver.

So I suppose I should update my graphic card drivers... yheeeaaaaa!!!

However decreasing pixel size ("physical" size) of the images - i.e. resizing them - should still help both performance (if the card is crappy) and file size so I'm eagerly awaiting any results from that.<

I will decrease the pixel size of all the pictures and I hope it works
This bedroom took me so much time that it would be a pity to put it aside