transfer info from one session to another...

[Wardeaux]

I want to be able to pass information from one session to another...
here's the situation:
I have a web app with session variables like "user authenticated".
I want to invoke a webservice through a desktop exe and have webservice
validate access using the web app session authentication... object is to
keep user from having to re-authenticate... I can also then "pass" info to
the webservice so that the webservice is smart and can access info already
provided to the webapp...
any clues on how to approach? Global/app vairables? I there a way to load a
webservice in a webapp and then access that from a desktop exe?

Pushing the envelope...
wardeaux