happy to reply to your question. if rice testified under oath and gave starkly different accounts of events that occurred (not just different opinions about things that might have happened) then i would start looking for other witnesses to corroberate the testimony. then i would weigh the testimony, the other witnesses, their past records of service and truthfulness and make an assessment about who was more believable.
i can't say i'd believe one or the other because i don't make my judgements on a partisan basis. i try to listen to both accounts (and other accounts by witnesses because i know that contrary to those who see everything in black-white, good-evil, with us -against us terms there are usually more than two sides to every story. in fact, most stories are round.) and make a judgement based on facts.

by the way, dougR, still waiting for a reply to my question about specific bush lies over on the "popular views of the bush admin." thread.