Searching:
"Ctrl+F" -- Opens the Find dialog box.
"F3" -- Repeats the last search.

Browsing:
"Keypad +" -- Expands the selected branch.
"Keypad -" -- Collapses the selected branch.
"Keypad *" -- Expands all the selected branch's sub keys.
"Up Arrow" -- Selects the previous key.
"Down Arrow" -- Selects the next key.
"Left Arrow" -- Collapses the selected branch if it's not collapsed; otherwise, selects the parent key.
"Right Arrow" -- Expands the selected branch if it's not already expanded; otherwise, selects the key's first sub key.
"Home" -- Selects My Computer.
"End" -- Selects the last key that's visible in the key pane.
"Page Up" -- Moves up one page in the key pane.
"Page Down" -- Moves down one page in the key pane.
"Tab" -- Moves between the key and value panes.
"F6" -- Moves between the key and value panes.

Others:
"Delete" -- Deletes the select branch or value.
"F1" -- Opens Regedit's Help.
"F2" -- Renames the selected key or value.
"F5" -- Refreshes the key and value panes.
"F10" -- Opens Regedit's menu bar.
"Shift+F10" -- Opens the shortcut menu for the selected key or value.
"Alt+F4" -- Closes Regedit.

PC-Maintenance

Maintaining your computer to keep it working healthy.

Increase Your RAM and so system speed

Free up your computer RAM to increase speed.

Increase Bittorent Download Speed

Tweak to increase bittorent p2p download speed.

Top Ten Tips To Improve System Speed

Top most 10 computer tips to speedup or boost PC

Top 20 Tips To Keep Your System Faster

Top 20 Computer tips to make your machine fast.