I'm just wondering is later in the future i can converts to vbulletin?
Thanks
You'd probably have to ask at vBulletin.
We don't support converting to other applications. However, we have a MyBB Merge system if you are converting from other software such as vBulletin to MyBB. Please see the announcement about MyBB Merge, and the appropriate forums below these ones.
Cheers.