Hard return in Textedit

[Simon Cavendish]

Listers, I have a dilemma in that I need to use the same text file  
under windows and Mac. The text file is specific in the sense that I  
keep records in it, one record per line. What happens however is that  
when I press the enter key for the new line in order to type in a new  
record in Textedit, when I subsequently open the same file in Notepad  
under Windows or I get more than one record on one line. It is as if  
there are no hard line breaks in Textedit. This causes me a bit of  
grief as I need to scan my records very quickly by just arrowing down  
the list so I sometimes miss a record because there are more than one  
on one line if I'm not being too obscure. Is there a keystroke that  
would execute a return in Textedit?

Thanks for your help.
Simon