Managing the Windows XP Recycle Bin steps | How to Resizing the Recycle Bin

Eliminating Confirmation Dialog Boxes

To eliminate the confirmation dialog box when you send something to the Recycle Bin

Right-click the Recycle Bin icon on the desktop, and choose Properties from the menu. Or, select the Recycle Bin in a Folder or Windows Explorer window and click the Properties button on the toolbar. You see the Properties dialog box of the Recycle Bin.

From the Global tab of the Properties dialog box, uncheck the box labeled Display Delete Confirmation Dialog,
Click OK.

Even after carrying out these steps, deleting something from the Recycle Bin still requires a confirmation. If you decide later that you've made the deletion process too easy, you can reinstitute Delete Confirmation Dialog; repeat the preceding steps, but check the check box in step 2.