Here is some more, I agree gerbils are AWESOME pets. I have two girls right now (Jasmine and Luna) and they are truly wonderful

http://members.nanc.com/~mhaines/gerbil.html
http://www.petermaas.nl/gerbils/english.htm
http://www.agsgerbils.org/Gerbil_Care_Handbook/

And a really great gerbil forum:

http://gerbilforum.proboards21.com/index.cgi

Good luck!