Mysql Upgrade from version 4 to 5

[Tharanga Abeyseela]

Hi Guys,
Iam going to upgrade mysql version 4 to version 5.x  on redhat ES4  . is
there any particular way to do that ? if i take a mysqldump of the database
and simply restore on to version 5 will work ? are there any differences
between syntaxes/db structure etc on those 2 versions ?
Thanks in advance,
Tha