use of tab key in Excel form

[crawfme]

I'm having an issue with tabbing between fields on a form that I've built in Excel. It works fine on my PC, but when a co-worker opens the spreadsheet and tries to tab between fields on her PC it instead inserts an actual tab character.

Here's what happens:
If she uses her mouse to select a radio button option then the tab key no longer works at all.
If she then uses her mouse to activate a text field and presses the tab key, then the cursor moves to the right as if there's been an actual tab character inserted.

This is similar to the question that was asked in thread707-1012830 back in 2005. There was no answer at that time, but I'm hoping someone has an idea now.

Thanks.

 

[strongm]

Sounds to me like StickyKeys, part of the Accessibility Options (you'll find in Control Panel), are in operation.

 

[crawfme]

Thanks, Strongm, but that doesn't seem to be the problem. Any other ideas?