I dunno about laser printing or renders and photos, they usually don't give you the best quality, but here are couple of alternatives:

I always print my gift renders and photos with a photo quality inkjet (personally, Epson) on a glossy paper, with archival quality.

If you don't have a lot of them ($$$) you can take the images to your local photo store and have them printed on 8x10 super duper high end photo quality paper. Here in the US they have them all over, almost wherever they developed film, they can print images now, so if you're from 'round here, you should be able to find one pretty easily.
It'll probably cost you 2-5 bucks per print.
Personally, I think that would make it special (and really good quality, and archival), and if I didn't have super duper photo printer at home, that's what I'd do.

Of course, if you're making them for 25 of your closest friends, that may get pricey.

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