Originally Posted by khuon
And at the very least, get a cheap Q/R skewer. Also, you will want to use something to prop the front wheel up so that it's level with the rear. Some people use a phonebook or you can purchase a riser block from a bike shop for about US$5.
I made one out of a one foot length of 2"x4" with two dowels screwed in on the sides. Works great. Leaves just the right amount of room for the tire, and looks good.
There are many, many recent threads on trainers, techniques, advantages, disadvantages, comparison with rollers, etc., - just do a search.
I use them with training videos.