Pc specs good enough for new games

[Hansen340]

Hi there, new to forums and am looking for advice on my pc specs. I have a bit of.money to upgrade parts but not enough for a new PC since I already have a laptop for everyday use. The pc will be used ONLY for Diablo 3, starcraft 2 and maybe any related games. Guild wars 2? Anyways,
Core 2 duo e6600
Intel junk mobo (can't oc)
3gb ddr2 ram
Gtx 250 oc
350w cheap psu
160gb 7200rpm hd

I am wondering where to start. My friend is willing to sell me his old amd x4 955 and new mobo with it (forgot model will update) for very cheap but could that money be spent in a better place?
Was thinking of going with 6-8gb of ram.
A bigger 500-600 name brand psu
Where else should I be upgrading, will the 250 handle any of those games decently?
Using a 42" tv via vga until I can get new 24" monitor
Advice please and thanks

 

[Gman450]

GTS 250 OC, should handle them okay but at a low resolution.

You haven't told us the amount your were going to spend on the 955BE and new motherboard. But it's fairly a good upgrade from a E6600.
And yes, RAM upgrade is necessary.
PSU too, because that "cheap" 350W most probably won't live long.

You could go for a faster GPU. But it depends on your budget.

 

[Redmar89]

I would recommend an upgrade on the videocard but you need money for it ofc

 

[Hansen340]

Best answer selected by Hansen340.