1st question, can a Fs2004 client connect to a Fs2002 host?
2nd, is there a patch for FS2002?

Ok, now on to my problem.  I have a computer set up on my Linksys wireless network that is a DMZ host.   I host games on this computer, Ghost Recon, BF1942, Teamspeak, RW etc.   From MY client, I connect to the internet IP address, thus joining all my buddies..
I installed FS2002 this AM and tried to connect with my Fs2004.  Nothing returned in search results with the IP address.  Tried the lan IP with no results either.  I qualified my server by having a buddie hook up with BF Vietnam.  No problems.  Also, FSspy doesnt show the game.  From my host computer, I connected successfully to another FS host.   So again, the computer is qualified.  But no connect and no show for any hosting.
 
Any ideas fellas?  thanks in advance....

Thank you my friend. But I thoguht that when set as a DMZ host , ALL ports are open and available???  So that should take care  of the ports.
   Yes, i tried to use FSHost but it says port 80 cant be reaced by FShost.  Still confused as to why ANY port is not open when setup as DMZ.
  Before a call to Linksys, i wanted to find out why FS2002 seems to be different than any other MP game I have tried to run on this computer.  If anyone knew....thanks..

Well, it works now.  Not REALLY sure what happened but I used FShost and made the port 80 another port number.  Read that over on the Fshost boards.  I sort of guessed at the new port number.  Dont know if this did it or not cause I dont understand it, but anyway, it works.  Maybe this tidbit will help someone else. 
Had a friend connect , so it surely works. Thanks for your replies...