Thanks to everyone who replied to my wireless network questions the card is up and running. I brought a DLink DWL-500 which has the prism2 chipset which seems to be the most supported chipset.

Here's somethings I found useful.

There is a RedHat RPM for setting up wireless network cards which was handy it can be found at prism2.unixguru.raleigh.nc.us and includes all the documentation as well.

http://jgo.local.net/LinuxGuide/linux-ethernet.html for the basics of which scripts to edit to get your network going.

Once again thanks

Simon