Aspnet_compiler with a virtual directory not on the default port

[yousry]

Hi guys,
I am trying to precompile a virtual directory that is located in a web site
other than default web site. I do not know how to use Aspnet_compiler to
precompile it. I tried to use the metabase path like the following :

Aspnet_compiler -m LM/W3SVC/670816/ROOT/TestCaching/ -f C:\TempFolder

When i tried this, it gave the following error :

error 1002: 'LM/W3SVC/670816/ROOT/TestCaching/' is not a well formed IIS
metabase pat
h.

Any hints ?????????

Thanks in advance