Shoutbox

What is the reason to replace the motherboard only?  About the only circumstance where that would make sense is if your current motherboard is malfunctioning.

1.2GHz Athlon is a fairly old PC.  If it works at all, you should just leave it alone for now and save for / talk parents into getting a complete new computer.  Even if you buy a new board and CPU, your other components -- particularly memory, which is the next most expensive item -- are not likely to be compatible with those.