Unable to start Apache

[avnd03]

[size=50]11:45:07 AM [Apache] Problem detected!
11:45:07 AM [Apache] Port 80 in use by "Unable to open process" with PID 4!
11:45:07 AM [Apache] Apache WILL NOT start without the configured ports free!
11:45:07 AM [Apache] You need to uninstall/disable/reconfigure the blocking application
11:45:07 AM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
11:45:07 AM [Apache] Attempting to start Apache app...
11:45:07 AM [Apache] Status change detected: running
11:45:08 AM [Apache] Status change detected: stopped
11:45:08 AM [Apache] Error: Apache shutdown unexpectedly.
11:45:08 AM [Apache] This may be due to a blocked port, missing dependencies,
11:45:08 AM [Apache] improper privileges, a crash, or a shutdown by another method.
11:45:08 AM [Apache] Press the Logs button to view error logs and check
11:45:08 AM [Apache] the Windows Event Viewer for more clues
11:45:08 AM [Apache] If you need more help, copy and post this
11:45:08 AM [Apache] entire log window on the forums[/size]

hello there,
recently i've installed iis and ms sql server for a windows project on my windows machine.
after project completion, i have uninstalled those components.
Now the apche is not starting (see error log).
Please help me to get rid of this.

Many thanks to the forum..

[Nobbie]

recently i've installed iis and ms sql server for a windows project on my windows machine.
after project completion, i have uninstalled those components.

The error message means exactly that there is still an active portion of Microsoft IIS (or any subsystem). Maybe it is a good idea to ask in a Microsoft Forum how to stop this.