There are tons of good cages available on the market, from screened-top glass vivariums (we use Critter Cages brand available from most big chain pet stores as the screen lid has locking mechanism) to higher-end molded plastic cages.

Here's a link to my website links pages, which as links to seven major cage manufacturer's. =)

Also, here is a link to a guide my fiance Rick wrote, Captain Overkill's Guide to Setting up a Glass Viv, including maintaining proper temps and humidity. =)