To remove the Lightning Conductor Web Part, log onto SharePoint Central Administration
Click on the Operations Tab
Click on Solution Management
Click Retract Solution
Choose your schedule e.g. now, and which Web Applications you would like to remove it from, and then click ok.
Open a command prompt and type the following command: C:\Documents and Settings\Administrator>"C:\Program Files\Common Files\Microsoft
Shared\web server extensions\12\BIN\STSADM.EXE" -o execadmsvcjobs
Navigate back to the Solution Management Page under operations in SharePoint Central Administration.
Click the LightningConductorWebPart.wsp link.
Choose Remove Solution.