Is this upgrade possible or compatable

[holdyourcol8r]

I currently have a "Primo Drone" AMD Athlon II X2 Dual Core 250 3.00GHz DDR3 System.

link:
http://www.overclockers.co.uk/showproduct.php?prodid=FS-265-OK&groupid=43&catid=1078&subcat=

What I have been thinking about doing is changing my processor to a AMD Phenom II X4 Quad Core 955 Black Edition "125W Edition" 3.20GHz

link:
http://www.overclockers.co.uk/showproduct.php?prodid=CP-244-AM&groupid=701&catid=6&subcat=1943

In the box there were two motherboard boxes I have checked the support site for both to see if this can work and it says yes they can support it.

links:
http://www.asus.com/product.aspx?P_ID=iDZQ9yNK2CbKW6Zv
http://www.asus.com/product.aspx?P_ID=bZpT4egUiqtojuHR


My graphics card is a nvidia geforce gt 220 and im not sure about
upgrading it.

Also I would add windows 7 home premium 64-Bit (I was stupid and chose 32-bit), change the case to a Zalman Z9 Plus Tower Case, add OcUK 30cm Cold Cathode 2-in-1 Kit - UV and finally add Corsair Airflow Dual-Channel Fan.

Altogether this will cost £260-ish and I would like to keep it preferably under £350. Is this upgrade possible

 

[holdyourcol8r]

Thanks guys I checked CPU-Z and the motherboard is a ASUS M2N68-AM-SE2, will that fit the case I chose?

 

[holdyourcol8r]

Although the primo uses the OcUk EZcool case mine came in a TRENDSONIC Corona for some reason

http://www.silicon-edinburgh.co.uk/product.asp?cat=Cases and Accessories&subcat=Cases&prodID=6433

sorry about the confusion I am new to this sort of thing if you have not already guessed.