Hey guys, I have lost contact with the ins and outs of building my own system somewhat so hopefully some advice might be on the way 
I built my own system back along but Uni calls and I need to upgrade so something a little more up-to-date.
The system is going to have to deal with running SolidWorks 2011/2012 comfortably....well as comfortably as i can afford anyway!
http://www.solidworks.com/sw/support/SystemRequirements.html
Link to the system requirements they suggest.
I only need to upgrade the main bits as far as I know.....m/b, cpu, ram, (possibly) gfx card, don't know whether my psu would still be ok? it's an Antec one, model no: Antec480
http://www.antec.com/pdf/manuals/Neopower_EN_Manual.pdf
I think I have everything else but if anyone has any recommendations for extras please say.
Oh one last thing, I guess the budget would be up to the £500 mark.....but the lower the better really as I am a lowly student
I need to build it though, so if it comes in a little over budget that's not the end of the world! haha
Thanks guys and gals for any help that you might be able to give me!
Look forward to hearing from you.

I built my own system back along but Uni calls and I need to upgrade so something a little more up-to-date.
The system is going to have to deal with running SolidWorks 2011/2012 comfortably....well as comfortably as i can afford anyway!
http://www.solidworks.com/sw/support/SystemRequirements.html
Link to the system requirements they suggest.
I only need to upgrade the main bits as far as I know.....m/b, cpu, ram, (possibly) gfx card, don't know whether my psu would still be ok? it's an Antec one, model no: Antec480
http://www.antec.com/pdf/manuals/Neopower_EN_Manual.pdf
I think I have everything else but if anyone has any recommendations for extras please say.
Oh one last thing, I guess the budget would be up to the £500 mark.....but the lower the better really as I am a lowly student

Thanks guys and gals for any help that you might be able to give me!
Look forward to hearing from you.