Hello Arlene,
Congratulations on a job well done!
One thing to consider is how to translate your experience and education into bottom-value to your future employer.
When people hire you, they are hiring you as a problem-solver, crtical thinker, and a team player.
Thus, you've got to use your resume and coverletter to convey to your future employer that you have the problem solving ability to effectively help the company with computer-related issues.
One thing I'd recommend that you do is to look at your current position from a value-added perspective.
This means that you need to look at your role and ask yourself what bottom-line value do you bring to that role. I'm sure you're a swift problem solver, or you might be a fast learner, or the go-to computer resource person.
Whatever you do, don't undervalue yourself because of your title, sounds like you already bring a lot of value to the table.
Also, look around your current position to see if you can find computer-related projects that you can begin to influence or take on.
This gives you some exciting things to talk about when interviewing in for your next position.
And as a final note, many career changers often forget to look within their current company to see if there are other roles at their company that they can move into.
If you've established a solid reputation at your current job, then another posiiton within the company may provide you with just the opportunity you're looking for.
Best of luck to with your career change - your 4.0 says a lot about how hard you've worked to finish your degree.
Now...take a deep breath, and begin finding strategic ways to favorably position yourself into your new position that will allow you to fully utilize your newfound degree, and all of your other gifts and talents.
Here's to succesfully positioning yourself into a career that fits your skill-set, your passion and your life!