Thanks countrycharm and conor. I read a post where Dr Byte (I think it was) recommended a sub folder installation as the best way to go, he probably wasn't considering static URI's. As you recommend Conor, I'll go down the sub domain route. I'm a little confused as to what path to give the sub domain's directory.

Am I right in assuming that if I create the sudomain demo.mysite.com I can then use the default root cPanel's gives me, which is /public_html/demo, as the location for my files?

This doesn't seem right as this is the same location as a sub folder would have and I didn't think I wanted that.

Can't believe I'm so confused about this process - normally pretty good at this sort of thing.

cheers

Simon