Before running the db2vccmd command (step 1), please ensure that you have started and stopped Visual C++ at least once with your current login ID. The first time you run Visual C++, a profile is created for your user ID, and that is what gets updated by the db2vccmd command. If you have not started it once, and you try to run db2vccmd, you may see errors like the following:
"Registering DB2 Project add-in ...Failed! (rc = 2)"