I just wanted to know what PCI adapters are compatible with FC5 - and/or what ones are easy to install with 3rd party drivers? I've seen a few lists have been compiled but they seem to mainly include PCMCIA cards.

My budget is approximately nothing, so cheap is good. Any recommendations?

Cheers guys

HW doesn't need to be "compatible" with a distribution or a release: what you're looking for are chipsets that are supported by kernel drivers. Atheros-based ones are probably easier because you don't have to pull any Ndiswrapper tricks. The used chipset should be printed on the package or can be determined from product types and versions in the LQ HCL http://www.linuxquestions.org/hcl/, http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/ and other chipset lists like http://zaragozawireless.org/wk/index.php/Chipsets, http://users.linpro.no/janl/hardware/wifi.html. If you limit your choice to cards that where made at least one year ago (wrt support) and check the chipset lists you can't go wrong but be careful only checking a cards product type may be misleading since chipsets may change per version.