How to add login form from phpBB2?

Hi dudes! And thanks for reading.

I have a small (or a biggggggg) problem:

I want to add a login possibility to my homepage – so people can login right when entering the page, comment news, vote polls etc – before they head directly to the forum.

The forum software is phpBB2 and its installed into /bb folder.

The site is using Word Press (of course!!) and I´m going to add the login to the footer.

Any advice would be nice and appreciated! Thanks.