Thanks for your help! 
"The Di-Link will either need to have UPnP enabled or manual port forwarding. I'm sure you saw it but just to verify, there is a di-link instructions link here under UPnP section 
Connection problems? Check here first! (click on link)"
    Used that link and did enable UPnP thru D-Link website per previous post. 
"Also, double-check your XP firewall. I believe you may need to enter a port for LW also; 
Firewall configuration instructions (click on link)" 
   The above LW link sez to start from within LW and I can't get it to boot [maybe it's not totally installed?] so I guessed on port. Is there a RANGE of PORTS I could try? BTW no XP ICF msgs have ever popped up 
"Your problems sound more to do with a software or modem/router NAT firewall.""
I agree. I tried rebooting all units. maybe I'll call verizon.  
"Also, try not running winmx at the same time." thanks, haven't been 
thanks again for your help :-)