|Image from WaldenU.edu|
With traditional classes, you'll be required to attend classes - and if you're currently working full-time, you don't have the luxury of time to include daily classes into your schedule - much more to spend time commuting or driving to and from the university when you have classes.
When you study online, you can study anywhere without the rigid schedules - at your own time and pace. This is most applicable to working professionals and those currently assigned overseas (such as those serving in the military).
There are lots of sites that offer online courses such as WaldenU.edu. Learn about Walden and see which of Walden University's online degree programs will most fit your current requirements.
Don't let your current schedule and location hinder you from getting a degree and from advancing. The internet technology (through online universities and schools) can be your ally to further your studies - let it help you.