Integrade gallery in website

I would like to integrate gallery in my webside.

The things i need is to change the usermanagement to my existing management and some kind of url rewrite.

http://example.com/gallery/album01
has to be something like:
http://example.com/area=photos&album=album01

is this somehow possible and where is a good point to start?
Already found this tutorial from TxRaves but it seems a little
bit outdated?

regards, modules.