I too pretty much did what Kaytee did. My son started solids at four months and what I would do is just when it was time for him to have him morning breast feeding session, I would first give him a few spoonfulls of solid foods and then offer him milk... this was around 8:00 - 8:30 after his morning nap. That way it established a routine. I did the same thing around say 6:00 in the evening so that was established as dinner time.
The key thing is establishing a routine and following a time schedule so your baby knows that solids are now part of the daily routine.
The other thing is following your baby's cues. When he is full, he will let you know by turning/arching away from the spoon, or now, like my son does, shut his lips so tight that you cannot pry them open with even a crowbar!!! That will be indication that he has had enough. Dont worry if there are some days that your baby eats a lot of food, and some days that your baby does not eat more than a couple of spoonfulls. Just stick with it and soon he will start looking forward to his solid food sessions
Hope all this helps...