thanks guys for the info.. actually the main prob is i do not have the contour dwg, thats so hard to draw it by my own.. i just use drape tools on sandbox and adjust it..it works.. for the instant road, it will be more cool if i have the contour dwg. btw, thanks for the help! appreciate it!

how large model u have been build on the sketchup?

Yes I use it, it's nice. See my post : http://forums.sketchucation.com/viewtopic.php?f=15&t=39864

ok guys.will do.hehehe

yup im using photoshop.