Are you tired of having to press Command-Shift-arrow in Safari, and Command-Shift-[ in Camino to change tabs? The solution's actually pretty obvious, and this bugged me enough to fix it. I prefer using Command-arrow to switch tabs, and all you have to do to fix it is edit the MainMenu.nib file.
Note: you must have the developer tools installed to do this
Control-click on /Applications/Safari and choose Show Package Contents. Go to Contents -> Resources and open up MainMenu.nib. Click the Window submenu, and then double-click on the shortcut key command-shift-arrow. After you double click on it, you can rebind it to whatever you like by just typing your shortcut keys.
This can be done similarly in Camino by going to /Applications -> Camino.app -> Contents -> Resources -> English.lproj/ and opening MainMenu.nib.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20031226193647102