Query for Upper Case

[AndyOlsenH]

In Access97, how can I query (preferably query design grid criteria cell) a table to return only those field values that contain an uppercase letter? Specifically, a UserName field has individual users in all lower case, but group names contain upper case letters. I need a recordset of group names only. I have tried StrComp, Chr(), Asc(), et al. I think my problem is in comprehending the return of a string vs boolean value, and testing for True/False.

[grugeon]

try
a calculated field asc([UserName])
Criterion <97

And untick the output box.