250$ Full Budget Upgrade

if you need a mobo cpu and memory, its not really a dell anymore, apart from the case which you don't have to use (sorry for lack of actual helpful advice but I'm too tired)

Thanks and get some rest.
I dont want it to be Dell  
I have a seperate OS and am just keeping some of the components for the time being.

Mobo - $50 - GigaByte AM2
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU - $66 AMD X2-4000
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU - $42 - 400watt FSP
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

2Gb - DDR2 -8000 - $70
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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Total - $228 Before Shipping.

The AM2 Mobo will support the Phenom when it ships to give an upgrade path.

If you have spare cash to finance rebabtes, you could get some better memory but they have $30-$40 Rebates to drop the price to $61

There is also a very nice 550w Antec that normally goes for $99 that has a $30 instant rebate with a promo code and has a $30 Rebate for a final proice of $39, but the extra advance cash will take you over $250 w/shipping.

If It was between the memory and the PSU, I would go for the 550 Antec since that will support really nice GPUs easily for future upgrades.

everythings great there except the mobo. i would get the Biostar TForce 550. its a proven performer and it has great OC capabilities.