Re: AFP TEST???
As far as the gift buying guides, I've seen it go two ways that might be new to you and maybe will help!
1) Have an "Annoucement/Gender Reveal Party" about a month before your shower for close friends and family - just something small - and let your shower guests know that you will be announcing the gender on a certain date on FB/Blog/via email/whatever so that if they want to buy gender specific things they can wait until then. Or just hold the invites until the Reveal Party has taken place.
2) Register for both boy and girl specific things and return whatever you end up not needing. Make sure your guests include a receipt AND specify things are off the registry when ordering - also this is much easier if you do your registry off Amazon instead of the traditional BBB or BRU or Target, as Amazon's return policies are better and EVERYTHING comes with a receipt - by email as well as in the box. Guests that want to buy gender specific items can buy one of each and let you return the one you don't want, therefore buying you essentially a gift AND a gift card. Of course this doesn't work with all groups but some folks might be keen on this idea. I've known people who have pulled it off.