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What about contacting the person who send you the message? Maybe s/he still has that thing in its inbox.

Though it is strange, that this is your first post since registering here today and you already received a message. Did a mod contact you?
 
I don't think this person had a private message, because this thread post is his first and only one. 5 posts are required before private messaging is enabled. Unless he made more than 5 and they were deleted, but I am doubting it since the OP hasn't been back to this thread since posting it.

OP could be talking about a deleted post, in which case he should us the Contact Us link to seek administrative assistance.

Call me cynical, but I don't think either are the case in this thread. I think it is a spam posting of some sorts.
 
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