Please, please help

Hi, guys,

I need to edit words in MS Word. For example to enter some char in each word
of selection.

I don't know what to do. It would be the best to make a plug-in for Word, or
to write a macro, which would use some DLL with my procedure. How can I do
that? Maybe somebody could send an example?

Please reply by e-mail
penta...@takas.lt
Thanks in advance.