PocketMatrix

ok i have a pretty old pc (amd k6 233 upgrading with some special upgrade thingy to a k62 400) lol, and i want to put a wireless card in it, which can connect ad-hoc mode.......it needs to be pretty cheap.......i found the d-link one but it needs pci 2.2 and i doubt my old pc has it......so i need another pci wireless card that will do that job (has to have a good range, cheap, ad-hoc supported and compatible with old pcs).....any ideas?