Trouble accessing SQL Server 2008 R2 Express across network

I've installed SqlServer on a Vista SP2 box.  Install seemed to go flawlessly.  While trying to make the server accessible across the network, one of the things suggested was to allow a firewall exception for sqlservr.exe and SQLbrowser.exe.  Should have been no problem.  I found sqlservr.exe right where I was told it would be.  I looked for it in the suggested folder--no SQLbrowser.exe.  Then I searched the entire harddrive for it--no SQLbrowser.exe.  I checked in the services folder, and sure enough, it indicates the sql browser is started.  Is there another *.exe file that runs sqlbrowser?  I'm thinking there must be, becuase I cannot find SQLBrowser.exe anywhere on the harddrive.  Another part of the instructions I found said to edit the connection string in Visual Studio.  In trying to edit the connection string, I cannot even connect to the server.  I can add databases, create tables, etc., in the SS manage ...