Howdy, and welcome to the board.

I know that from testing for others, UserForms are problematic when trying to accomodate the Mac, since MS has based Mac VB on VB 5 not VB 6, and no ActiveX support, etc.

Can you post a sample? I won't be able to look at it for a day or two, but I know others on the board who have experience in this area may be able to help sooner.