Blimey trackballs are odd little devices it takes me ages to get used to them if I'm working a PC with one attached. That said though the people who use them swear by them (I just swear at them) It's certainly another option to look at if you just need the mouse for pottering about in windows.

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FussyPucker

There are only 10 types of people in the world: Those who understand binary, and those who don't...

Sarcasm: It's not big and it's not clever...........but it's funny as fuck!

The Special One!