Hi,
yes you could use $chr(160) instead of $chr(32), but note that it is a hard space, not the same as $chr(32). I don't know if Excell will accept that, only way find out, is to try. Beware, on some fonts $chr(160) will be another character, but since it works for you, it's fine.
It looks to me that you ought to read up on mIRC Scripting a bit, especially on token identifiers. In mIRC, type /help token identifiers, or take a look at this
tutorial We can all help you with scripting, but in the end, you can help yourself the most, by learning.
Greets
EDIT: meh, I was bored anyway:
alias getname return $deltok($1,-6-,32)
alias getdate return $gettok($1,-3-,32)
alias getstatus return $gettok($gettok($1,-6-,32),1-3,32)