Hi Guys
I also got this letter today as well from ACS:LAW claiming I made available for upload "Two Worlds" and although it seems to be a scam, its not a scam in the normal sense, it appears to be an attempt to extract money by the use of some underhand (but still legal) tactics.
I have spent the last 4 hours doing some research on this, I am not saying I am an expert by any means,I am not, I am also not a legal expert but so far this is what I have found.
The letter sent to us looks to be in the same format as the Davenport Lyons (DL) cases, indeed it seems DL represented Reality Pump in the same manner in the past in cases for the same software publisher.
If you follow the links to the ACS Website in the letter you were sent you will see that they have indeed applied to the High Court to obtain the details of suspected file sharers, PDF attachments are available on their website with the High Court Orders.
Where do we proceed from here well a couple of pointers on some usefull information from the lawyers who represented many of those in the fight against Davenport Lyons
Frequently Asked Questions: File Sharing - Copyright Law Articles and News - Lawdit Reading Room
Also worth checking out
Have you received a letter from Davenport Lyons? - Page 35 - Cable Forum
Lots and lots of information on the above links.
The main thing is try not to worry too much, if you have done nothing wrong why pay, dont pay, but also dont ignore them, it would seem one tactic they use is to go after the ones that fail to respond as they know if your not going to show if they take you to court , they win by default.
Hope that helps a little