When you open My Computer or any other folder in Windows XP, it shows the Common Tasks in left side as default view.
When you open Windows Explorer, it shows Folder list in left side as default view.
Many people like me find Explorer view more convenient and useful rather than the common tasks pane. So here is a small trick which can be used to set "Explorer" view as default in My Computer and all folder windows. So whenever you'll open My Computer or any folder, it'll show Folder list just like Windows Explorer instead of the common tasks in left side.
1. Type regedit in RUN dialog box and press Enter. Now go to:
2. In right-side pane, set value of "Default" to explore
3. That's it. Now open My Computer or any other folder, it'll show Folder List in left side pane.
NOTE: To revert back to default view, just delete Default key from right-side pane mentioned in Step 2.