I think a slogan or tagline is equally important as a logo. But the slogan, I think, has more impact on the customer. A slogan can be parsed and analyzed, while a logo, no mater how much thought goes into it, doesn't often receive that level of inspection - its really just an image we ant our customers to associate with our company. The tagline, on the other hand, tells the customer what or how or where we do our stuff.
My tagline is Keeping Computers From Taking Over the World, and I chose it because (1) My customer base is largely older and/or less computer savvy and tends to have some fear when it comes to computers, (2) I think the humorous slant works well to alleviate some of that fear, and lastly (3) The other tech in town is a pretty grim fellow, and I wanted to differentiate myself from him.
I do like your slogan, but I also think it is a little generic, and if I didn't know you were a tech, I might think you designed or sold "technology". StableSolutions was correct when he said a slogan should give your company some personality (StableSolutions: I really like that slogan and thought process, by the way). If you are thinking of changing your slogan, you might try to think about how you want to be perceived by your customers, or what you do best and come up with a few options and pick from there.