Macintosh Computer M2453 - Mouse Question


i have never owned a mac, but am pretty interested in purchasing one. i am thinking of buying an ibook (m2453) on ebay. the one i am currently looking at seems to be a pretty good deal. the seller purchased it from a school system and says that it starts up no problem, but that when using the mouse you can navigate fine, but unable to select anything. i was wondering if this is a fixable (easily) problem, or if it's something i shouldn't even bother with. any advice would be greatly appreciated. thanks in advance!
It's a software problem. If you buy it, wipe the drive (reformat) and you should be fine.