No, but a backup of the pst is recommended.
NB OL2003 can create a Unicode format pst which doesn't have the earlier
format size limitation and is apparently more robust. So you might want to
create a new pst in the Unicode format then copy your stuff across once
installed.


"plb" wrote in message
...
If I install outlook 2003 will I lose my emails I have on outlook 2000?