help me to solve this problem

Question

Hi I am learing .Net mobile. I workded out a small program in .Net mobile language and tryed it in my local host ( My computer) using Emulater.It's working fine.Also i hosted the same file in my official site and tested with the emulater.Working fine. But when requested the file using a WAP enabled mobile it's not working.Why it's so ? Any one help me out for this problem ?