Looking to upgrade my computer so I can run 2 sites at once?

[Vetstadium]

I am not a computer whiz but here is my question. I have Hewlett Packard about five years old with a Pentium 3 Processor with 127 MBRam. I am running Windows ME on it and it is 32 bit whatever that means. My free disk space is 32,000 MB and it says I have 57% available space. I want to be able to run two sites together so I can 8 table. My computer frequently has problems running 4 tables on Party. It does work but I have to sign off during and restart so they can stay up. It can no way handle two sites at this point. I am looking to buy a computer if possible for $1,000 or under and was wondering what type of hardware you have if anyone here 8 tables on two sites. I could ask someone at computer store but they may not know if it can run two poker sites. Any feedback appreciated thanks.