can i install vbulletin in localhost for testing purpose?

[Videx]

Be advised it's a long complicated procedure to run a test forum. Unless you have a need to develop modifications I would advise against going to all the trouble. Most especially if you aren't a technical person.

Think about it. So what if you get 4.1.5 working fine locally? Eventually you'll have to update the version on the server and at that point your successful test results will mean nothing.