Did you know that there is a script that was shipped with Windows 2003 SP2 that allows you to recycle your IIS Application Pools.

Below is the command that you use from the command line:

[code lang="dos"]
Description: list IIS application pools and associated worker process
             Recycle application pools.

Syntax: IIsApp.vbs [{ /a  | /p  } [/r] ]

Parameters:

Value              Description
/a    Specify an application pool by name. Surround
                    with quotes if it contains spaces.
                   If used alone without an accompanying action,
                   IIsApp.vbs will report PIDs of currently running
                   w3wp.exe processes serving pool .
/p            Specify a process by process ID. If used alone
                   without an accompanying action, IIsApp.vbs will
                   report the AppPoolId of the w3wp process specified
                   by . When a PID is specified with /r, that PI
                   is mapped to an application pool and the action is
                   taken upon the application pool. If a PID is given
                   for a web garden, i.e. an application pool served
                   by more than one w3wp, then all w3wp's for that
                   application pool will be acted upon.
/r                 Recycles the application pool.

DEFAULT: no switches will print out the PID and AppPoolId.

Examples:

IIsApp
IIsApp /p 2368
IIsApp /a DefaultAppPool /r
IIsApp /p 2368 /r
[/code]