I still use my logitec webcam with
www.yawcam.com software. It's free, and works. I have live pictures on my fish tank's website, and a stream set up for when I need. The software will host it's own websites even, works great.
Also for glare, i took my webcam lengthways down my tank, with the camera close to the glass. This way the glare is on the front/back panes, which is nice, because then if i show someone at work my tank, i don't need to worry if my house is a mess :P.
The skype idea is very good as well, seems perfect for going on vacation.