Enough power?

[rebel28]

I've been researching parts and i'm almost ready to go ahead but I have a few last minute questions.
The system will be used almost exclusively for gaming, Starcraft II, WoW, Bad company 2 etc - Running resolution currently at 1920*1080. I'm also trying to re-use as many things as I can to get the build up for under £999 (Hard drives / Dvd Drive / mouse etc)

1. Will the power supply stand up to the system? no plans to overclock initially but maybe in future when games start to tax it.

2. Is the video card a good choice or could I do better?

3. Any other suggestions welcome! change i7 for i5 and put the extra £££ somewhere else for example?

This is the build so far, thanks in advance for any advice

http://www.4freeimagehost.com/uploads/2a7f75c3aa8e.jpg

 

[rebel28]

Thanks for the heads up on windows, so if i understand changing any other component would be fine with OEM but changing the motherboard would require a full re-install?

 

[rebel28]

Interesting, really thanks for that info then! Will try to scrape a few extra quid together for it then and im all set. Will try to stick up photos of the build here when i eventually get it.