Rfacebook: iFrame vs FBML Question

Rails
1

I’d like for URLs like Log into Facebook to
map to http://mysite.com/foo/bar/1.

Is this at all possible if my site is running as an iFrame? Or is this
possible only with FBML?

2

Can anybody help here? Thanks.

3

It’s only possible with FBML. I frame’s will never change your url.