oTTO identified the correct key.
To get at your start programs in the registry:
1. Click "Start" and choose "Run." In the "Open" command line, type REGEDIT and press [enter]
2. CLick on the plus (+) sign next to HKEY_LOCAL_MACHINE
3. CLick on the plus (+) sign next to SOFTWARE
4. CLick on the plus (+) sign next to Microsoft
5. CLick on the plus (+) sign next to Windows
6. Click on the plus (+) signnext to CurrentVersion
7. Click on the RUN folder, the contents will be displayed on the right side of the Registry
8. You probably will want to create a back up of the RUn folder by clicking on "Registry" then "Export Registry File" This will create a .REG file which can be easily merged back into the registry by double-clicking on it at any time (from explorer)
After YOU BACK UP YOUR REGISTRY then delete the programs you don't want to run at start up. If you later want something back, you can just load your registry back up and delete stuff again.