Also, I use Photobucket to post my pictures...it's a lot less of a hassle IMO. Photobucket also has a code to post on forums so it's very easy
From the looks of it, you won't be able to upgrade your CPU too much... Since this is an OEM PC, I doubt you can update your BIOS to maybe
support AM3 CPU's.
Long story short, just get a new motherboard and CPU, it'll be much less of a pain.