Q: How to connect 2 FTP using proxies

[MxxCon]

well, 1st thing i would recommend to talk to sysadmin. they might be able to provide you with needed info.
if they are blocking all ports, it's prolly for a reason and you wouldn't want to lose your job just so you can d/l a picture.
find out if your company has internal proxy you can use, or find a public HTTP proxy that is running on port 80...

icq, aim, trillian all use ports other than 80, but can also be configured to use http proxy.