Pulling Files off a Server

I have written a file processing script and now i'd like to have the program retrieve the data files from the server itself, instead of me having to pull the updated files myself at the end of the day. Can anyone suggest a library that contains the functionality i need? Program runs on windows xp and compiler is VC 6

thanks

What sort of server?
FTP
HTTP
?

it has both ftp and http sections, the data can be easily moved to either

You might want to look at the WinINet API