Not true, alleh, grants vary. Basically, they're granted on terms of conditions that you agree to fulfill. Some require you to pay them back, some don't, some are monetary and some aren't..the process reminds me of applying for scholarships. Some you need a certain mark for, some you don't. Some you need a certain interest, some you don't. Some you just put in your name and you get it...you get the idea.
That said sometimes grants require you to give back the money, according to their terms. I'm no accountant, but I just gained a 5000$ grant myself to buy a new printer (along with a few other odds and ends). Small businesses grants are exploding right now, and up here in canada there are hundreds being handed out..Not really, you have to qualify is the tricky business and you have to agree to certain terms. I theorize the reason being for there being more grants; the more business there are created, the less unemployment there is and the more willing the gov't is to help you get set up so you don't rely on them later.
OP: Research into your local Investment and Business Development/Industry offices or ask at your branch of bank. In Canada I know of a few, but they vary by area.
Like I said, I'm canadian and the way it works up here probably is different from the way it would in the USA as far as what's available.
There are usually no constrains on what you do with the money, as long as you spend it how you originally intended to spend it. They don't care what your business is, though some require you to submit a completed business plan and marketing plan to show your business is viable enough.
I found I qualify for a 20 000 grant, and am currently working to apply for that. There's lots of opportunity out there - you just have to look for it and qualify for it. Sometimes its luck, so good luck.