Autoruns - See what programs are configured to startup automatically when your system boots and you login.
HijackThis - HijackThis is a malware detection and removal tool that's ideal for users who demand more granular control over every aspect of their computer's performance.
Startup Delayer - Startup Delayer gives you the power to optimize your Startup Process by delaying applications from starting up as soon as you log into your computer. By delaying the applications during start up, your computer becomes usable a lot faster.
Autorun Organizer - Free startup manager with delay option.
Emsisoft HiJackFree - Emsisoft HiJackFree is an system analysis tool to detect and remove any kinds of HiJackers...
MSConfig - Describes how to use the System Configuration utility (MsConfig.exe) to troubleshoot errors that may prevent Windows Vista from starting correctly.