You can just run
You can spit the results out to a text file using something like
/report c:\PathToSaveReportTo\ReportFile.txt as an argument.
Tested on Windows 7 64-bit, and XP SP3.
XP Note: In XP it's not automatically added to the path so you need to specify it's path when launching:
"C:\Program Files\Common Files\Microsoft Shared\MSInfo\msinfo32.exe"
Another XP Note: Still using XP? Time to upgrade!
More info from Microsoft: How to use System Information (MSINFO32) command-line tool switches