I need a Font Manager

For Windows XP. And here are my requirements:

• Can act as file manager for fonts
• Can 'active' or 'deactivate' fonts as needed (by moving them into and out of the Fonts folder on the fly)
• Ability to scan and make list sortable with actual names and vendor. Kudos if it can do this by style (ie serif, sans serif, typewriter, symbols...)
• Can manage hundreds of fonts (I basically need to sort through my font downloads, which has, oh I dunno, dozens of folders and hundreds (if not thousands) of fonts

I appreciate your recommendations. Personal testimonials especially valuable!

Jam it back in, in the dark.

At work I use Extensis Suitcase. That's really the only thing I've ever used and I have it on both Windows and Mac with phenomenal results on both. I have thousands of fonts too so I organized them in a alphabetical groups (A-C, D-E, etc.) to keep the clutter down inside the program. Needless to say, I love Suitcase. Mac version even reads both Mac and Windows fonts; both TTF and PostScript.

There's nowhere I can't reach.