Good Anti-Spyware/Virus software for OS X?

I have CA on all my XP’s, but nothing on my OS X… anyone recommend anything?
CA isn’t supported with OS X.

Symantec Corporation released a MAC OSX Antivirus, you can download it from http://www.symantec.com/business/security_response/definitions/download/detail.jsp?gid=nmc

How to make XP/Vista look like Mac OS X for free and without screwing up your CPU Part 2

Dell 2.8 Ghz. Super Fast Optiplex Pro GX 1 Computer, Gigantic 750GB Hard Drive, 4GB RAM, CDRW/DVD Combo, Intel P4 Single Core Multimedia Desktop PC, includes New Licensed Windows XP 2 Operating System and Genuine Sealed CD, SP 3 …

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