Windows Msg I need to know how to handle

The last 2 times I've rebooted after normal shutdowns Windows has handed me tthis message: "The system has recovered from a serious error." When I click the link "technical info about this message" all I get given is the following:

C:\DOCUME~1\JOHND~1.MIL\LOCALS~1\Temp\WEReb3f.dir00\Mini122406-01.dmp
C:\DOCUME~1\JOHND~1.MIL\LOCALS~1\Temp\WEReb3f.dir00\sysdata.xml

That is all Windows says except that if you report the error, they won't divulge any private info.

What should I do? Delete those files or what?