Ok thanks for all the help so far, got my txtboxes and calculations all working just like they should....except...one calculation is giving a 'divide by zero' error.
Whats the best way to deal with this? Should I just limit the values available for this txtbox so that it can't happen? Or is there another way to make the program either ignore this or return a 'please enter another value' msgbox....or something else????

Thanks,
Scott