Excel Shortcut key "NO WORK"

I am trying to record a basic macro in Excel 2002. When I am in the Record Macro dialog box, I try to set the shortcut key to "Ctrl+Shift+M", but it won't accept my keystrokes. The Dialog box just keeps displaying "Ctrl+" and won't let me input any key. Did I screw something up to cause this? It really isn't a major problem, but it's driving me nuts cause I can't figure out why. Thanx

:blush: RESOLVED! DUH! Alll I was supposed to hit was just the shift key, "cntrl" was assumed. I just press shift and VOILA, it works.

See ya