Abit wlp-01 suddenly won't find wireless network

After trying to install a CA security suite form my intenet access provider, my WLP-01 suddenly stopped finding my home wireless network in one of my PCs (VISTA operating system). It had previously worked for about a year no problem. If I screw around for a long time turning radio on/off, and disabling/enabling it sometimes finds it and will then connect with no problem. I can transfer the same card to another VISTA PC I have and it works perfectly. I have uninstalled the CA security suite and uninstalled/reinstalled the Abit driver several times. It seems as though there are files that are not getting totally wiped by the uninstall (even after I delete the Abit folder in Prgram Files).

How can I wipe the slate clean and get a good install of the WLP-01 wireless card?