Scheduling classes.

So today I finished organizing my classes for next semester.  It took me 3 hours, 2 pieces of scratch paper, 2 computers with 2 browsers, and a lot of patience.  Somehow I am ending up with less credits than this semester, but more classes.  I don't know why there isn't a system where you just choose the classes you need, and it just fits them all together.  The worst part?  One of my classes has literally 1 spot remaining, and it's the only time I can take it.  Did I mention that I have the second-to-last registration date based on last name and year-standing?  Not to mention that 1 of my classes has to be a bi-term.  Ugh.  This all makes me sick.