I have just installed CouchBase Server Enterprise v2.0.0 using the setup.exe on my Windows 7 64bit machine and supposedly the Browser based Console should appear automatical
You are probably hitting a known issue related to IP address acquisition during startup of Couchbase Server.
I have documented a work around here: http://tugdualgrall.blogspot.com/2012/12/what-to-do-if-your-couchbase-server.html
As stated in the blog post it will be fixed in the 2.0.1 release