@kevsterman said:

I've been looking at the pcspecialist website and I've come up with the following spec for £1300. Is this good value for money? Will it give me a really fast computer capable of dealing with several intense programmes and the internet all running at the same time without any noticeable slowdown?
<SNIP>
[Your Spec list]
<SNIP>

I'm just so clueless about all this stuff.

======================================
I'm not clueless, but no expert. May I suggest going to TigerDirect.com or get their phone number.
They can put together a base system (or whole System) you can add to.

I've worked with them for 15+ years in building my own machines. I have not had any major problems in delivery or customer service. If any component doesn't work it is replaced. Even in these hard economical times I rely on their advice. I am totally new to SketchUp. I just started in the 3D world, but have been a Misc. Metals Detailer (Draftsman) for 29 years. My machines MUST work, period and significant downtime is not an option. I am on my 3rd Home Built machine (from Tiger) and each one has been an upgrade from the last, because of the component improvements.
I have absolutely no regrets or complaints.

Good luck and
Take Care,
Scooter