If you want to disable the file sharing controls, apply the following Windows NT Registry hack:

Opps! this is a Win9x and ME tip only.

Hive: HKEY_CURRENT_USER
Key: Software\Microsoft\CurrentVersion\Policies\Network
Name: NoFileSharingControl
Type: REG_DWORD
Value: 1

Control Panel Network Policies Registry Tips:

Disable Network Controls
Disable File Sharing Controls
Disable Print Sharing Controls
Hide Identification page
Hide Access Controls

Gives an in-depth look at the NT/Windows 95/98 system policies. Step-by-step walkthroughs.