you are also going to need a cd rom drive and a low end agp graphics card
EDIT :
I have a couple things if you need
1)a 512mb stick of DDR333 which will be more than enough for your purposes
2)a couple CD roms sitting around, you will need one if you want to install an OS
3)a 32mb 32 bit Geforce 2 MX if you need(AGP)
PS. for a HDD circuit city has western digital 250s for like $60 after rebates quite often, otherwise try www.tigerdirect.com