Transferring Large size files thru TCP/IP

Im doing a program which transfers files thru tcp/ip in an intranet environment. It does work fine for small files...but the problem is we have to transfer files which are having 6 to 10 MB in sizes...and multiple files have to be transferred...any ideas would be really appreciated...

The files are text files and Im using Binary mode for the open read and write operations.

If you want to see my coding I will upload...

There are several examples on how to send files using the winsock control (which i'm assuming that you're using). One such example that I found helpful is here. That example shows how to send files that are up to 2GB in size.