I'm sure there's a very simple answer to this, but I've googled my #$% off and haven't found it... I need to build a url to an aspx file that will exist in a module's directory.  If the portal is on a website as opposed to a url, everything seems to work fine.  I can get the http alias and combine it with the modulepath.  However, when the site is on a virtual directory, the virtual directory appears to be duplicated in the portal alias and in the module path.  So, if the site exists at http://localhost/virtdir, then portal alias returns localhost/virtdir and the module path returns /virtdir/desktopmodules/mymoduledir.  So, when concatenated, the url isn't valid.  I can certainly parse the two strings to eliminate the virtual dir, but that hardly seems worthwhile and I expect there's some simple way to accomplish this...  can someone help me out here?

Thanks!

ResolveClientUrl("~/DesktopModules/YourModule/yourfile.aspx")

That should get you the proper link, regardless of the input path.