Homegroup in Windows 7

I think Windows 7 is great but this stupid Homegroup is driving me crazy.
Opps I did it again, I did something to the Homegroup that lost me all my
access to my second drive D:\

This is what I want to do:
Share all Files & Folders on D:\ with any computer on the network except My
Documents, My Pictures, My Music and My Videos (which are stored on D:\)
with no password needed to access the drive, but would still like my Media
Extenders to access Pictures, Music and Video's
I had it working once before, but in My Network Places on XP machines still
show My Documents, My Pictures, My Music and My Videos but will not allow
access which is a good thing and D:\ being shared allows access to files and
folders on that drive.

I hope you can understand where I am coming form

Cheers

 

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http://social.technet.microsoft.com/Forums/en-US/category/w7itpro