Yes on MOST laptops the keys can be removed, very tricky little procedure I would highly advise taking it to someone who is familiar with the process because it is so easy to break them in the process.
I posted this question on the Dell forum but a CNET moderator said I should post my question here, more action over here than over on the Dell forum so he said so here is my question:
I have a Dell Vostro 1510 laptop which will be 2 years old next month but the letter "T" on my keyboard has starting to stick, aggravating. I use canned air regularly to keep the keyboard clean. I don't want to call Dell because it's now out of warranty. Can the individual keys like the key to the letter "T" be removed for further inspection?.