As I recall TE's fix-a-flat page is pretty good. Just remember, that some rims are slightly oversize and some tires are slightly undersize. No way, no how, will they play nicely together. Figure it out ahead of time so you aren't stranded on the road or trail somewhere. When the big strong boys at the LBS are using 4-letter words, it probably means you are doomed for aggravation or worse. I speak from experience.

http://www.teamestrogen.com/content/asa_levers