Unsuccessful port forwarding attempt

Hi all, I am on a Vista Home premium machine and have a wireless connection to a linksys WRT54G. I am needing to forward a few ports over the router but so far have been unsuccessful. I have followed the guides to the router from portforward.com and still canyouseeme.org is showing the ports are not opened. My static IP address is the first available, 192.168.1.100. I am wanting to forward the port 4020 and have no 3rd party FW, no windows FW, and router FW is turned off as well. I know I have followed the correct steps as I have forwarded ports before and I am pretty sure my ISP is not blocking the port, because I have tried different ports and also my torrent program shows that its port is not open, however I am still able to make some downloads at mediocre speeds. Help please!!

 

Vista doesn't play well with port forwarding with me either; I think that for some reason it ignores the ports you want to open. I think the best thing to do is run netstat from the command line and see what ports your computer is using. Use those ports.

I dunno if it works or not, but that's something I've read. Just throwing it out there.\

EDIT: more information:

I can't link to the site as it contains some things against forum policy, but here's a screen shot of the relevant portion.

 

Thanks for the helpful attachment, Ill let you know how that turns out for me. Do you think the problem is the protection software that comes turned on by default with Vista? The firewall, defender, having to confirm almost every apps execution. I constantly am alerted that my system is vulnerable becasue ive disabled the firewall and defender but I think there are still protections in place. I disable them because the block me from using apps I want and need to be using and cause unnecassary problems. Very annoying. I need to get these ports forwarded as well for other applications so if theres a break through, let me know?