Content Search with Visual Basic 6.0 Not Finding Text

[Karen]

I am running Windows XP with SP1 and trying to perform a
search on Visual Basic 6.0 *.BAS files for a text string.
I do not have the Indexing Service enabled. Windows XP's
Search keeps returning no files found. If I try the same
search under Windows NT, it finds files with the text
string I have specified. If I take one of the .BAS files
and select the entire contents, paste it into Notepad, and
then do the Windows XP search, it finds the text in the
Notepad file. The Search function seems to know my Visual
Basic modules because I can select this under the Search
option: Type of file. Why is the searching of a text
string in VB 6.0 files not working under XP? I also had a
similar situation with certain text fields within link
tags in HTML files.

Thanks in advance for any assistance on this.