Currently, it is not possible to use our Service to map a drive on a machine that runs IIS, but please note that our engineering team is working to enable this functionality. The iis by default binds to LocalHost port 80 and the mapped drive needs Port 80, which are requirements on Windows XP and 2003 machines. However except for the mapped drive feature, you should be able to run all other functions of the Desktop Application normally.
As a workaround solution, if you are hosting a website that is served on an external IP address via iis you can configure iis to only bind to the external IP address at port 80 and leave Localhost port 80 free for the mapped drive feature.