Use:
"C:\Program Files\Common Files\Microsoft Shared\web server
extensions\60\BIN\STSADM.exe" -o enumsites -url "http://[portal]"
where [portal] is the actual URL of your portal and you will see all the
top-level Webs in your portal (including Personal My sites and Webs in
your managed paths). However, you will have to run additional commands
to see the entire hierarchy.
Use:
"C:\Program Files\Common Files\Microsoft Shared\web server
extensions\60\BIN\STSADM.exe" -o enumsubwebs -url
"http://[portal]/sites/[topWeb]"
where [topWeb] is the top-level Web in your managed path and you will
see all the sub Webs in that site Collection.