MOMCertImport Tool gets a GUI makeover in Operations Manager 2007 SP1!
The command line MOMCertImport command line utility now has a GUI version!? A tasty renovation indeed!
If you run in a command prompt with the full syntax momcertimport <certname.pfx>, it will still execute from a command line, but if you simply type MOMCertimport with no arguments or double-click the executable, you get:

May 7th, 2008 at 5:40 am
[...] revealed to you shortly after SP1 that the MOMCertImport tool had a new GUI, which is used to read the certificate serial and write it to the registry so the Health Service [...]