I agree; it helps if you give your idea of a nightly rate. Also, how many people - like if you need more than one room or a suite.
I'd first of all stick with national chain hotels to start. Also, you can read reviews on
www.tripadvisor.com (but I always take in mind that there is always going to be someone who complains about stupid things!).
Sometimes you can get a deal on a condo if you agree to go to a timeshare presentation. I have a good friend that did that once.
It also depends if you have a rental car or your own car. If so, you're in a better position, as most hotels don't have free shuttles around.
The first trip my DH and I took (the year before we got married) to Disney we stayed at a Residence Inn in Kissimmee (not there anymore) for about $59 a night. We enjoyed it as it had free breakfast (which we had at 7am every day) and we used the kitchen to fix some meals to save $$. Also, the restaurants right around there on 192 had some great prices (I recall a Chinese place that had a great lunch buffet for about $15 for the two of us total - it was so good we went back a couple of times). I'd definitely stay along that route for a budget trip.
If you want to be closer in with shuttles, the Downtown Disney hotels are very convenient. Don't grocery shop at Gooding's though - their prices are inflated.
Also check out
www.mousesavers.com for some info!