Enroll or not to enroll

Spring semester starts next month, January 4, 2008 to be exact.  I thinking of enrolling for a Physical Geology class or Intro to Sociology.  But I really don’t feel up to it at all.  It must be the vacation that is making me so lazy.  These two classes are mandatory and are both 4 credits each.  I am aiming to get those 4-credit classes done with.  So, now, if I enroll, will I have enough funds to pay for tuition???  Urghhhhh!!!!!!!