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Your PC is infected. The file called 66632873.DAT is considered unsafe and there may be other infections on your PC.
You should urgently check your PC and remove any malicious software including 66632873.DAT as soon as possible. The free version of Prevx 3.0 will scan your PC for millions of spyware and malware infections in less than 2 minutes. Don't put your confidential data, or your identity at risk, check your PC now with Prevx 3.0.

The filename is associated with the malware group:
The filename 66632873.DAT was first seen on Jul 8 2009 in the following geographical region of the Prevx community:
66632873.DAT can also use the following file names:
This file has been seen with the following file size:
This file has no vendor, product or version information specified in the file header.
The filename 66632873.DAT refers to an executable program.