Please help with Zelda 1 & 2 ROM hacking

Hi there!

I know that you mostly hack Zelda 3 (my favorite), but I still wanted
to ask.

I've translated Zelda 1 & 2 for NES to my native language Swedish,
but I wish to do it again, but now use the PAL versions as a base.
I extracted the PAL versions from the PAL versions of the WAD:s
for Wii. I'm gonna use Mato-san's guide to improve the translation
of Zelda 1.

This is what I humbly wish for help with:


Zelda 1

Add a fifth row row of letters when you register your name
and add Swedish characters (ÅÄÖ). There's a fifth row in
the Japanese version so it should be possible to transfer
to the PAL version.


Zelda 2

Add the three Swedish characters Å, Ä and Ö when you
register your name.

Change the size of the text windows (aka. letterbox?) so
that more text can fit if it's possible?


I wish to make a certain patch with the changes in English
in case some other person wish to translate the PAL version
to her/his native language.

I've taken a beginners course in Ada, but I thought it was
hard to understand and I know that Assembler is even
harder.

I might even try to translate Zelda 1 and 2 for GBA afterwards
if it's not too difficult.

Thank you for reading!

Have a nice day!