How to gather information about a open port?

[Qian Gong <q.gong@tue.nl>]

Hi,

I use nmap to detect the security of my friend's win2k machine and find
a open tcp port 1039. We tried several days but can not find any
information about this port. Is it possible to use some Linux tools to
probe this port and gather information during communication with this
port? Thanks a lot for any suggestions.

Qian