yup.
from reading appears that i need to point workers , but i can't do that because i'm behind FW that blacks any traffic, but on port 80... Is there any solution for this case?
You might try cgminer (one worker per machine) without lightcoind to reach WeMineLTC's US server, it's on port 80
cgminer has lots of flags, but here's a command line you could try:
cgminer --scrypt -o us.wemineltc.com:80 -u [your worker id] -p [your worker pwd] --shaders [from your gpu specs] --intensity [start with 10 & work up +1] --worksize [start with 64 and work up +64] -g 1
note: if you have more than one gpu, then show them all in the worksize flag (for example, --worksize 64,128,256 would be for 3 gpus running different work sizes. You can do the same for --intensity using a lower number for the gpu you have connected to your monitors