Okay, so I love using Growl with Adium to see the messages that I get and not having to click over everytime. However, whenever I have to switch to Windows, I loose that capability, so does anyone know if there is anything like it for windows? I'm using Pidgin atm, but I might would switch back to Trillian and even possibly to *gasp* AIM.....

Digsby has a similar functionality to Growl; messages and online notifications and what not show up in little fade-in-fade-out popups in the corner of the screen. And it's a damn good multi-protocol IM client to boot.

http://www.digsby.com