can someone help me to choose a racket grip size?

hello there!
i am out of states,so couldn't head for any academy in fla to ask them my very important question...on the other hand,i saw the tenniswarehouse website for seeing if in their "learning center" is there any help for it that i couldn't find out it.and for the full information i must say that i have experienced all kind of grip sizes, and am really comfortable with all types of it,so i was very concerned about how to choose one grip size?? can someone please help me? :confused:
thanks
andy

an image is worth a thousand words

http://racquetdepot.com/images/grip_2.jpg


if the finger fits exactly you're having a good grip size

an image is worth a thousand words

http://racquetdepot.com/images/grip_2.jpg


if the finger fits exactly you're having a good grip size

thanks very much.

http://racquetdepot.com/images/grip_2.jpg

^ I also use that grip. What is it call?

semi western, could be full western, well yeah thats good, wrong grip size could get you a tennis elbow so not good, use the one right for you im 4 1/2 just to tell you =)