If you're refering to services created by the programs that you installed, you can run msconfig from the start menu search and check the services tab. Check the box "hide all microsoft services" and see which services are listed there, then pick your poison. Most of those are just services for notifying you of new versions (like for Java and Adobe Flash), so be careful which ones you disable. If there's something related to your hardware (like a service for the graphics card) you should just leave it alone.
Setting up this in msconfig will automatically effect the list of processes and services that are run automatically on system boot, so you can configure startup processes in msconfig as well and those settings will be remembered by the OS (the processes are located in the "startup" tab of msconfig)