Praveen,

Here's one way to do it:

1. Select the file you want to diff in VSS Explorer.
2. Hit Ctrl+H (history).
3. Select the two versions in question.
4. Click the Diff button.

Mike

I assume you know how to name those particular versions within sourcesafe.
Using the SS Explorer, you can click (on the left side) on a project and
select 'Show Differences...'. This will give you the ability to diff a
whole directory. In the dialog popping up, you only have to specify the two
revisions inside the repository, instead of one inside and on on disk(as is
the default). If that doesn't work(I didn't try it) you can still check out
one version and then diff against the dir where you checked it out.

Uli