Raja,
Start with following the directions in the manual.
For specific instructions on connecting to your VAN read your VAN connectivity guide.
All the VANFTP service does is issue FTP commands. Those command are wrapped around get task services.
But you need to have a general understanding of FTP, and your VAN. Then read the section in the wmtn users guide on public queues.
That should get you going. If you need specific step by step help then we can talk off line about that.
HTH
#webMethods#B2B-Integration#Integration-Server-and-ESB