Do you have any specific "looks good on paper" degree choices? I work in admin, data entry, and customer service with no desire to supervise.
I'm no expert so consider these two ideas with a grain of salt.
A business degree, either two year via a community college, or a four year degree, never hurt anyone working in any business.
And if you enjoy computers, a CS degree and some programming experience will open up your opportunities.
However, if you are going to spend the money to go to college, you might aim a little higher than just a promotion in your current company. Unless you can get into a six figure income (or at least high-five figure) in a reasonable amount of time, I don't know that the cost/benefit ratio is worth it.
But a two year degree, either in business or something computer oriented, would probably be a good investment. Since such schools are usually less expensive. Even a 2 year program in database development would probably open a lot of doors for you.
All schools have counselors that you can talk to before you enroll that can give you far more info that I can. The thing I'm best as is providing encouragement.
You go girl!