Hi not sure where to post so hopefully I have the right forum.

First up I suppose at the moment some are considering me to be a cybersquatter, but to be honest I think the organisation in question is a bully and I really hate bullies so I thought I would ask the geekzone family for some advice. My intention was never to be a cybersquatter, I saw a commercial opportunity so I took it.

I bought a couple of domain names last year, not really prepared to go into to much detail but a commercial entity wants them.

I have always been very open to the organisation that I owned the domain names and used them for legitimate use, very aware not to sully the trademarked brand, however due to additional circumstances the organisation now wants control of the domain names I purchased I have no idea why the names where not purchased prior. Initially they contacted me personally, they are a commercial entity so I put a commercial worth on the sites. No further negotiation was entered into, next thing I know I receive a lawyers letter offering me $500 and that I should transfer the domains immediatley, they didnt ask they demanded. Sounds like bully behaviour to me. 

Today I received a domain name commission complaint from what I can ascertain because I dont own the copyright I will probably loose, however I have invested time and money into the site and believe I should be compensated adequately not just a mere $500.

Anyone had any experience in this field? Any pointers? I have no intention of hiring a lawyer because I dont believe I have done anything illegal, we operate a first come first served ip address system.

The letter from DNC states I have 15 days to respond.
Regards
AB