Problems with MSSCCI and VB6
Problems with MSSCCI and VB6
Doing some work at a customer working with Visual C++ , IAR, VB 6.0 and couple more I faced with some issues using MSSCCI and VB6.
(MSSCCI - The Team Foundation Server MSSCCI Provider enables integrated use of Team Foundation Version Control with products that do not support Team Explorer integration. [Read More])
After Installing MSSCCI I Can’t See TFS Menu

The solution is very easy, just edit vbaddin.ini
(start->run: vbaddin.ini (its in the windows dir)
Add the following line VBSCC=3, save the file and reopen VB6.

Run VSS 6.0 MSSCCI provider Alongside the TFS 2010 provider?
You can change your registry to fix this.
Create a toVSS.reg file and add below text.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\SourceCodeControlProvider]
"ProviderRegKey"="Software\\Microsoft\\SourceSafe"
Add another one for TFS
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\SourceCodeControlProvider]
"ProviderRegKey"="SOFTWARE\\Microsoft\\Team Foundation Server MSSCCI Provider"
Enjoy