Printing from a web service?

[Selden McCabe]

I have a web service that is supposed to print some files.
I've set up the virtual directory security to use a domain user account, and
added the printer to the server logged in as that account.

When I run the web service, it says it's printing, and does not get any
errors.

However, if I watch the printer queue while this is happening, I don't see
any entries.
Also, the printer never prints the files.

Is there some trick to printing from a web service?

One thing that may be a clue: when the application that is supposed to print
runs, I see it on the tast list, but the username is "ASPNET", not the
domain account I've set up the IIS virtual folder to use...

Any ideas what's going on?

Thanks,
---Selden