CPU Upgrade?

[Guest]

Hello,
Im looking to upgrade my desktop PC as im getting lag on games. My specs are:
Manufacturer: Hewlett-Packard Company
Model: a6210.uk
Processor: AMD Athlon(tm) 64 x2 Dual Core Processor 4000+ 2.10 GHz
Memory: 3070 MB
System Type: 32 Bit

On Windows Vista Home Premium

Is it possible to upgrade my CPU and if so, which one would be compatible?

Any advice is greatly appreciated.

Thanks

 

[popatim]

Its really time for a whole new build or computer.