Changing Servers ???
 

i want to change servers and i want to do a clean instal of my site on the new server the only thing i need is to keep the current members

Is there anyway possible to do this

By hand, use mysql and insert them using your back up. Then once your done rebuild all user stats such as posts (unless you want them to keep post count)

There's a section within the vBulletin manual on the best method to move your mysql database across servers :)