You probably need the CR/LF pair, try ff="One"+Chr(13)+Chr(13)+Chr(10)+"Two"+Chr(13)+Chr(10).
Personally, I'd say #DEFINE CRLF Chr(13)+Chr(10) and use that instead for readability.
>Here is sample code that doesn't work with outlook..
>fff="One"+chr(13)+chr(13)+"Two"+chr(13)
>o=createobject("outlook.application")
>oitem=o.createitem(0)
>oitem.recipients.add("email address")
>oitem.subject="Sample"
>oitem.htmlbody=fff
>oitem.send
>oitem=null
>o=null
>
>The text in the body is one line.. When I copy and paste the text into notepad, the formatting is there, but not in outlook..
>
>Any Ideas
>Rob