.Net web service uploading problem

[mai]

Hello everybody

i created a simple .Net web service and it is working well on my local host.
but when i uploaded it to my server i got an error

"Server Error in '/webApp' Application.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

Requested Url: /webApp/Service1.asmx"

i am sure that all files are uploaded!!

should i do some special configuration to allow the server to run asmx files ??!!
please if anyone know the problem reason or solution please help me.

Thanks

mai