help with sql statement

I was google searching, and the only SQL mailing list I found is currently giving a 503 error, so I hope you don't mind me asking my SQL question here, since there are a lot of SQL gurus here. I am having a syntax problem: Instead of doing a query like this:: select SMS_R_SYSTEM.Name from SMS_R_System where (SMS_R_System.SystemOUName = "example.com/COMPUTERS/MAIN CAMPUS/ABC") or (SMS_R_System.SystemOUName = "example.com/COMPUTERS/MAIN CAMPUS/XYZ") I'd like to shorten it in the where clause to: select SMS_R_SYSTEM.Name from SMS_R_System where (SMS_R_System.SystemOUName = "example.com/COMPUTERS/MAIN CAMPUS/ABC", "example.com/COMPUTERS/MAIN CAMPUS/XYZ") But I'm getting a syntax error. Any idea why my SQL syntax isn't valid?