I lost all my forums, I mean it all got wiped so I have made a fresh install of Vbulletin. I did a massive back up with cPanel wich left me with a folder named 'backup-6.19.2008_18-20-30_pecli.tar' I can see my database inside this its name.sql Can I some how use this to get all my topics, posts, members and forum layout back?
Use WinRar to unzip that and then use the restore database process in vBulletin (you can find tutorial about it online).
First thing, how big is the database? Phpmyadmin will only import a database up to a certain size. After a certain amount of time the upload will time out. If your talking a database that is over a hundred megs, you can use a program called mysqldumper - mysqldumper.de/en Use an ftp program to upload the database to the file manage folder of mysqldumper and then use mysqldumper restore the database. If your database is around a gig or more, you may have to use command line from a shell prompt to restore the database. You will need to upload the database to a folder on the server first. Do a search of the vbulletin.com site, I remember seeing exact instructions on how to restore the database from a shell prompt.
I thought you do a google search on "how to restore vBulletin database." You have some good tutorials there!