grep 2.7 on Windows 7 Professional

[Rafael García]

I am using grep 2.4.2 without problems. Now I would like to use new 
option --include.
I have downloaded grep 2.7 for windows 32 bits from 
http://i18n-zh.googlecode.com/files/gzip-2.7-w32.zip, and it seems it 
cannot obtain directory listing information here (Windows 7 Professional 
32 bits).

This works OK:
grep toolbar prueba.py

But this doesn't work:
grep toolbar *.py
grep: *.py: No such file or directory

Probably this is not a bug of grep but perhaps you can tell me where to 
download a working binary 2.7 for Windows 7.
Thank you.

--
Saludos
Rafael García (Falo)
Logical ETR
www.logicaletr.com
Tfno. 667053222