Required to make Unit Price greater than 0

Is there a way to make Unit Price in Order Entry / Lines / Detail a manditory field where it can't be 0? I have tried UnitPrice - GreaterThan - UnitPrice in the rule making wizard but that doesn't do anything.

Chad


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Has anyone else had a problem with (version 8.03.305D) the F1 key not
being context sensitive? I just get a standard alphabetical help
menu rather than the specific module I'm in at the time.

Epicor support says to upgrade to the latest version and it will
work. I'm skeptical and believe it has something to do with the
location of where my help files are stored. (on a seperate file server
miles and miles away)