I quite literally decided to do just that.
So, I had enough money to get the 8 gigs of memory I wanted (Corsair) and the Western Digital 1T hard drive, like I'll ever use a third of that...I have less than 10 gig of a 13 gig drive in use now. Maybe I'll start loading music into the computer. Yeah, that's what I'll do. Next time the spiff man comes by, I'll have enough for the CPU (Intel i3 550). If my birthday money had been anything other that a HD gift card, I'd almost be there for the mother board too. Then I need the operating system. Guess I'll go Windows 7. Not sure I'm fond of that idea though.
I'll keep my case, the upgraded 450 watt power supply and fans, the CD/DVD drive (read only) and the floppy (though I don't know why) from the old system. I have a USB external hard drive too. I'm guessing the built in video and audio of the new motherboard will be comparable or better to the old old SoundBlaster card and the video card. But I sure don't look forward to integrating the information I want to keep from this drive to the new one, nor getting the new system back on the LAN to be able to print. I bet the latter will take a month to accomplish!! Jim.