Ivette First, Net Etiquette - DON'T CAPITALIZE ALL YOUR WORDS - no one likes to be shouted-at!
LJ's options are reasonable. One thing to keep in mind is the quality of your cabinets. If the hinges or catches are worn, I don't think there's many options besides complete replacement - many of the old metal cabinets were build WITH hinges/catches, and are not easily replaceable.
If they're in decent shape, just looking old/dated, I'll tell you what I did to some old furniture that I picked-up for free. Probably similar to your cabinets - rounded edges, wierd knobs, really dated finish. The one thing I liked, was that they were really well-made.
Since I didn't have any money invested, no matter what I did, I could always throw them away and start over. I decided a coat of paint was a good start, so I pulled off the hardware, lightly sanded the entire surface, then used some simple cans of spray paint. It took a couple cans, but I really liked how they looked when done. Then, I simply replaced all the knobs with more current styles, and 'voila, I've got some new-looking furniture.
For a kitchen, if your cabinets are dated, the countertop probably is as well. For this, I'd look into purchasing a new countertop from a home improvement store (Menards, Lowes, Home Depot). This alone will update the look. If you can afford, do the sink and faucet.