Hi Sumit,
To run uninstallation through Altiris ITMS you need to perform following steps:
1) Import software for which you want to run uninstalation to Software Catalog (if it is not yet there).
2) Ensure that Uninstall command line is properly defined for the software. Specify it if it is not created as part of the import (Uninstall command lines created automatically only for MSI files).
3a) Create Quick Delivery task using the software resource and select Uninstall command line type in it. Run this task on clients from which you want to remove this software. Note that in case of Quick Delivery task uninstall command line will be executed even on clients where software is not installed if such a client are included to target for the task.
3b) More advanced way of doing the same as on step 3a is to created Managed Delivery policy selecting Uninstall command line. In this case I suggest you to ensure that proper detection check exists for the software resource for which uninstall is performed. This will allow to check where software is installed on the clients prior to executing Uninstall command line.
More information about Altiris Software Management Solution can be found in User Guide for this solution and in set of Best Practices articles available on SymConnect (just perform search by "Symantec Software Management 7.1 Best Practices").
Thanks,
Andrew.