How to tab or enter between textboxes not in userform

Hi everyone

My spreadsheet is looking a bit of a mess so I'd like to clean it up by doing away with entering into the cells which are here there and everywhere, and have the textboxes so I can arrange them without having to re-write all code referencing cells. Doing this on a user form seems ok with the tab order, but I can't do this as easily on the worksheet. Can someone please guide me into how I can do this as when I enter I cant get the curser to mover from the box its in.

Re-doing the worksheet as a userform looks like being a pain in the neck for no reason if I could work this out.

BTW I am using Excel 2002 on XP.