I currently have:
CPU: Athlon XP 2000+
Mobo: PCChips M811Lu
RAM: Kingston 512MB DDR
PSU: Silverstone SST-405 400W
Capture: Hauppauge PVR250
HD: 80GB Western Digital and a 160GB Western Digital
Case: Silverstone LC-17
Drive: Generic IDE DVD-ROM

What I plan to add:
CPU: Athlon 64 3500+ Venice Socket 939
Mobo: EPoX EP-9HDAI PRO
HD: 2 320GB Seagate Barracuda 7200.10 SATA (Perpendiculars)

I'm going to get rid of the old HD's and just use the newer ones in Raid 1. Would I have any problem with this new stuff in the old setup? Has anyone had experience with this motherboard?

Athlon 64 works fine, the binaries are compatible. I've got a slightly different Epox motherboard but it works fine too.

Awesome. Also how do you like that zalman heatsink? I was looking at the same one but I'm kind of worried that it won't fit in my case as it's already a tight fit with the stock amd cooler.

Check the Zalman website for motherboard compatibility. Unless the CPU socket on that mother board is unusually close to the edge, or has tall components too close to the socket, or your've got protrusions from the case that intrude into the CPU/SHF area, it should be OK. Aisde from that it's not a problem. It's wider that the stock HSF but it's relatively low profile.

Oh, and I recommend it highly, very quiet and keeps the CPU cool. Even in summer heat, and under load the CPU never goes more than 10-15C above ambient with the Zalman running at it's lowest speed. My only consession to summer weather is turning the 3 speed case fan up to medium.

OK sounds great. Couple more quick questions though, I hear the new version of KnoppMyth will support autoinstalling to SATA drives. Is this correct? I also plan on using the hardware Raid 1 features of that mobo to do the array, any obstacles there?(or is there any reason to do the raid in software?) Lastly I think I'm going to start from scratch and not try to migrate my install from my existing setup, but I would like to keep my recording schedules and the shows that I have previously recorded (I hate getting repeats). If I save the mythconverg DB should there be any issue in transferring just those parts in to the new DB? I am somewhat of a beginner with mysql. Thanks for the help

This thread has a detailed discussion on doing a partial restore. http://mysettopbox.tv/phpBB2/viewtopic.php?t=10117

Sorry for the redundant question, and maybe I'm blind, but I don't see a mention of partial restores in that link.

Well there's brief note at the bottom of the first page, but I remember a more extensive discussion. Hang on while I hunt it down... Hmmm... No luck so far. I swear it was was in that thread or one of the upgrade hints one like this: http://mysettopbox.tv/phpBB2/viewtopic.php?t=10116

The basic trick is to figure out which tables you need to preserve (most of the ones that are called someting-record-something is a good start) and extract just the SQL commands to recreate and repopulate those from the DB dump in the backup. Then you can either drop that file back in place of the full DB dump and run a restore or you can feed them into mysql manually (check the mythrestore script to see how it's done there). I remember having a long discussion with someone about this back in spring, including which tables to keep.

Alright, thanks for the help. I'll look around for it as well.