Excel change case

hi, Mr.Cricket !

If you want to change case in Microsoft Excel at a click of a button
without inserting any formulas just try this add in
http://exceltemplates.blogspot.com/...-case.html

if suggestions/wish-list are accepted...

- what if... I wanted to change the case of only one single-selected cell ?

- what if... I wish to cycle several *cases* for n_pre-selected cells ?
[given the userform remains active]

- what if... current selection is NOT a range-type, or activesheet is NOT worksheet-type objects ?
[other than On Error Resume Next but really make the cells case-change IF on a worksheet]

as I said, these are only [*my*] suggestions/wish-list/improvement-proposals/...

regards,
hector.