Can I program my spyware removal programs to run via DOS

Currently I have my AVG Free Edition to automatically run when I boot up my computer. What I’m wondering is, can I program my adaware and Spy Catcher programs to run right after my AVG Program?

Thanks.

Spybot Search and Destroy -if it catches a program in memory- will ask you to reboot your system. Once you return to the OS, Spybot will load imediately (before other Startup programs) and continue the scan (and cleaning)

So can I program it to do this everytime I boot up my computer? Also, I too have Spybot S&D and a friend told me that if you make donations you get an updated spylist sent to you which enables you to find more spyware on your pc. Is this true?