theheartopener on "Ordering of sub-pages"

Hi,
I am having problem with ordering of subpages. If I am to run the subpages with numbers, till the number 9, it takes the order but the moment I start with number 10, it comes after number 1 instead of after 9 and so it goes with 11, 12.... I cant use the the Alphabets for the sub-pages exceeds the total number of alphabets. I would be happy if someone helps me to sort out with this numerical ones.