Well, I figured out how to get my processor OC'ed before I got a response.
I have an aircooled AMD 939 X2 4200+ on an ASUS A8R32-MVP MOBO with 2 GB of Corsair XMS PC3200 RAM. I'm currently running at 2.42 GB and I'm probably going to try and push that up to around 2.53 or so. My ram is running at 266Mhz at the moment and my voltage is at 1.375 V.
I have excellent airflow in my case so would that setup sound pretty reasonable? I'm not looking to do an extreme OC but rather just a mild bump up to help out my work in Photoshop.
Are there any good free programs I can run to test out my machine after I've finished overclocking it?
I decided to just do a bit of experimenting to see where my 4200 would go. Once I went past 2.8, I couldn't reboot without pulling out the power cord and starting from cold. 2.6 is just fine since I need to keep this machine for 3 or 4 years.
Now as for a better GPU... I suppose I'll wait and see what DX10 does to my wimpy little X1600PRO.