Permissions issues

[abcd]

I have a COM component written in VB. say xyz.exe

I have an ASP.NET application. In IIS I have set the default security of
this application to the annonymous MachineName account.

ASP.NET page calls methods on xyz.exe. In dcomcnfg, xyz is set as indentity
as launching user.

The issue is I can not access the method from asp.net page on xyz compoinent
for IUSR_MachineName account.

any clues...?

thanks