I've never upgraded my forum so i'm unsure how to do it without messing things up. Can someone please tell me how to do it?
It is very easy. On what version are you currently? Also please refer to Malcolm's post, they explained it very well.
I am using version 1.6.3
The main reason i want to upgrade is because I want google seo to work with my forum.
1.6.3 to 1.6.4 should be easy