I recommend you to stay away from matsonic, as budget boards go I really hate them, if you don't intend to overclock the best bang for the buck would probably be, a 2500XP (check to see if the 2600XP they are offering is a barton core) MSI make some very good budget boards, I have yet to have one die on me, other good budget boards I have used were: shuttle, and ECS. As to the RAM there are alot of good brand out there, Crucial has always been very good to me when I couldn't afford corsair. My suggested config:
Abit NF7 79.99 on newegg
AMD 2500XP barton 90.00 on newegg
Crucial 512 PC2100 67.00 on newegg
=236.99
Save the extra 36.99 it will be WELL worth it.