I've ordered non-night-sight Heinies for my G17 from Brownells without a problem. Nice sight picture for everyday target shooting.
Installation of non-night-sights is made easy by using a sight pusher for the rear sight. Night sights absolutely require them since hammering the sight with a punch will most likely break the vial containing the tritium.
I bought this sight pusher from glockmeister, it worked ok. I recommend covering the part that touches the sight with tough tape to avoid silvering the sight's finish in case it's a tight fit going into the slide (like my Heinie one was

).
http:// glockmeister.com/product_info.php?products_id=181
If you go with the glockmeister sight pusher, I'd recommend a pair of meprolight night sights with it (you save $10 if you order together). People seem to like them and they aren't terribly expensive. I recently bought a pair for my incoming G26, but haven't received them yet.
And to answer your question about installation: If you have the sight pusher, you bring it to the range and use it to adjust windage as needed. Most sights don't require any staking or anything, they stay put. I've heard that Heinies sometimes get loose after a couple thousand rounds (take that for what it's worth). Now all Heinies come with a set screw in the middle of the rear sight, so once you find the right windage adjustment, set it in with some loctite (I used blue).
Front sight is pretty easy, pop out the old one with a center punch, then use the included screwdriver. My Heinie front sight didn't fit with the glockmeister screwdriver, so I took the 5mm socket from my cheap socket set and used a dremel with sander to carefully thin the material away (from the outside diameter of the 5mm socket) so it would fit into the tight space required for the job.