computer for sale

i have 2 pc's, and  i need to sell one of them.  i bought a new one, but rebuilt an older one, so i have one extra, and need some cash. if anybody is interested, i can set up an auction on ebay and u can pay thru paypal so everything is legit and we are both protected.  here are the specs of both comps, ill sell whichever somebody wants first.

Hewlett Packard PC....im looking for about 250 bux for this pc, as i just spent 100 upgrading it, im open to offers
2.4 ghz pentium 4
1gb ram( was at 512, i just upgraded it a few weeks ago
64mb ati radeon 7000 video card(brand new upgrade)
60gb hard drive
windows xp service pack 2 loaded
comes with re-install software
microsoft office
i have a brand new optical mouse, keyboard, pc speakers

Dell dimension e510, not sure how much i want for this system, open to offers
pentium D 930 processor(3.0ghz dual core, 4mb system cache, 800mhz fsb)
2gb pc4200 ram
160 gb hard drive
256mb ati x600 video card
16x dvd burner
windows xp sp2, microsoft office, reinstall software

i also have a 19inch dell lcd monitor and a 17 inch lcd monitor