It's a little hard to say from your description, but maybe you are referring to Verizon Access Manager? Or BlackBerry Desktop Manager? Both can be installed from the cd that came with your Curve.
You don't need Verizon Access Manager to charge, sync or backup your Curve to the PC, but you do need Desktop Manager for that.
Edit.... you would need Verizon Access Manager if you are using your Curve for tethering, that is internet access on a laptop though the BlackBerry. Otherwise you wouldn't need VZAM.
Agreed!! VZ Access manager is the culprit. Upon installation it defaults itself to start when your computer starts. To remove go to your Start Menu-->Control Panel--->Add/Remove Programs and click to uninstall it.
Get rid of it if you don't need it. It can be a resource hog!