magento upgradation pblm?

[jees]

what all are the thing that i want to do when iam upgrading the magento version to 1.4.1.1 pls if nay one knows rply

[Atli]

1. Duplicate your live server setup on a development machine.
2. Run the update on the development server.
3. Solve any issues you run into.
4. Run the update on your live server.

And back up your databases and files before doing any changes, obviously.

P.S.
Magento has a forum dedicated to posts about upgrade issues. Might want to browse through that.

[jees]

thank u for your suggetions