What size UPS for two Computers?

I have a dell dimension 3000 with a pentium 4, and 516kb of ram, and 17" LCD monitor, 40 gig system drive.

My other computer is home built VIA MOB with a athlon xp2200 processor and not much ram, I have a 40 gig system drive and two seagate lrg internal extra storage drives. with a standard monitor.

I dont use these computers together very much, but sometimes I need to move files from one system to the other via lan.

Could anyone suggest the size of a UPS that would take care of both of these, I have already lost a MOB because of the local power companies power coming on and off quickly, and then sometimes it goes out for an hour or many hours.

My last cyberpower 650v avr fried and I lost the MOB in my Dell, I want to avoid this again.

Well like I said i want need power for both comp all the time but sometimes I do transfer files. If anyone could recomend a ups for this application that would be great, in VA if possible I dont see much stuff listed in Watts.

Thanks buds:yum

 

It may be better to buy two seperate UPS systems, thus you don't loose both.

 

Here's a couple of recent threads, the first has a lot of good information for your situation.

http://forums.majorgeeks.com/showthread.php?t=127761&highlight=lightning
http://forums.majorgeeks.com/showthread.php?t=131212