Look in the tray to see if there is an icon to control Insights -- a blue circle with a white M.
I see there is an icon off of my Start Menu for Insights. AllPrograms->MicrosoftMoneyPlus->Insights. It points to "C:\Program Files\Microsoft Money Plus\MNYCoreFiles\mnyinsit.exe"
If you launch that, it may have a control. I just launched it. It put an M icon into the tray. (You probably won't have to launch, because Insights is already running.) Right-clicking that gave Options. You could try un-ticking everything. I then tried Exit. That gave me a pop-up that said "You have chosen to exit Insights. Would you like Insights to run the next time you log on to Windows?" I selected No.
That will probably fix it for you. If , you might prevent the automatic starting from occurring from MSConfig. Or if nothing else works, you might rename/delete mnyinsit.exe