BIOS limit with old laptop.

Greetings

I have an old Compaq Armada 1500 that i intend to use as P2P and
printer server; maybe http/sql/ftp if i use really lightweight stuff
since it only has 32RAM. The thing is, the disk is a 4GB Toshiba and i
wanna get something larger than my 70GB of files.

Can i get any IDE disk and make a small /boot partition at the
beggining og the drive? Or do i need to fiddle with BIOS limits and
LBAs and a whole bunch of stuff i'm unaware of? From my feeble attemps
at searching stuff i found this limit to be 32GB and that i could ahve
to disable dma in order for ide to work...

Any suggestions? What about server software?
TIA

--
Nuno Magalhães