phnuff,
There is a new variant of the MSBlaster Worm that is destructive.
The new variant also copies the file TFTPD.EXE to the %System%\Wins folder as SVCHOST.EXE and then creates a service for it with the display name "Network Connections Sharing".
TFTPD.EXE or SVCHOST.EXE is a TFTP (Trivial File Transfer Protocol) server that is used by this worm to set the affected system as a download site for its copy. This worm is then able to propagate by instructing remote systems into downloading it using TFTP.
This could be what hit your computer,
Richard