How to find out a former connection IP Address

[kc_kyle]

I'm unjustly in a bit of trouble. To cut a long story short, I'm being accused of downloading a film illegally. I hadn't actually heard of the film in question until I got this stupid letter and the downloading software I allegedly used, bittorrent, is something I've had no experience with.

I have a feeling that the reason this has come back to me is because of a mistake made by my ISP matching the IP Address to the wrong person. Therefore I'm trying to figure how to disprove their accusations altogether.

Does anybody know how I can find out my IP Address from about two weeks ago? I tried using this method of finding an email I sent and looking at the message details. However this IP Address given here is the wrong type. Apparently this would be the network IP, but I need to determine the connection IP. I'm told there's a difference.

Ideas/suggestions/advice most welcome.

 

[Westyfield2]

Other than asking your ISP, your best bet is finding something you used that logged it. GMail logs what connections are being used on your account, and [only for the admins to see] lots of web forums log what IP you posted from.

Also, probably best moving/another post over in General Discussion. There have been *lots* of these letters. ACS Law?

 

[kc_kyle]

No I live in Germany so it's some law firm from Munich. I've got a lawyer working on getting the fine reduced and all that, but if I can prove it wasn't me, then I shouldn't have to pay anything. I'll repost it in the general section.