Thanks for both of your replies, Valloric and theducks! I really hope it's not something with either my computer or mouse otherwise then I
really don't know what to do x_______x
theducks, unfortunately I'm not well versed in tech-y speak (for lack of a better term

) so I don't think I can answer all that, but I'm on Vista Home Basic with Intel Celeron D 356 and a 1gb RAM.
I'm actually behind; I have 7.34 :P I downloaded shortly after Christmas and haven't gotten around to updating since the button-clicking issue keeps me from doing so no matter how many times I click or hit enter. Should I try to update it by reinstalling Calibre?