will this pc do it?

[winwin]

I run Vixen and XLights on an old laptop with 256 MB of RAM, 1.8 GHz Pentium 4. It has Windows XP SP-2 (SP-3 slows thing down a lot). It's a standalone PC, so it's not like I have to deal with updates to prevent attacks/viruses from the Internet. Heck, I don't even run anti-virus software on it!

Glad to see that it is working fine for you. My system would not be much different than yours, although I was thinking to update it with sp3 but you are right, it won't help for a stand alone pc dedicated to the lights.
I just need to put my hands on a replacement for the power supply.

[Gary]

Oh, I forgot to say that my show has between 130 and 140 DMX channels, if it makes a difference.