Yes I understood that Atif, but you will build a new Application on ASP.NET this will be a web application that they will install on their web server so clients can access it and see real time information. the functions that will be include on that application only you can decide, It can include various parts, some parts that are to be access by the clients and then others that you can logon to an will give access to same functionality you have on your VFP 9 app, so if they are outside the company can can still access the app and get information they need.
All depends on what you want to provide and what your company/client needs.

>thaknx for ur reply dear.
>i knw it can b done with asp.net application. but see prob is this my programe is alredy working there on lan. now wen il make this application in asp.net how can they get connected on net and can see the updated information anytime they log in. i was thinkg that for internet the server shud b webserver only. then only ur lan and internet can get the data same time. wat do u say abt this. can u xplain me the infrastructure i shud make for this application ?