I use a program called 'Powerpro' on my PC. It does loads of stuff (clipboard extender, gives me additional menus to access programs, recent documents and folders with a single click, etc.), including the ability to create macros for keyboard entries or mouse movements or clicks. You can set these macros to work all the time, or only on specific windows or applications.
If there's something I need to do in Excel that is repetitive, I often create a macro in PowerPro and I can map this to a specific keyboard button (or combination of buttons) - so I can map the F1 button to send 'return, down, right, right right' (or whatever) to Excel.
http://powerpro.cresadu.com/ (the website looks awful, but I've been using this application for about 15 years now and can't recommend it highly enough).