Minor MySQL Update on FreeBSD 6.1

[redpaint]

Hi,

How do I go about updating mysql from v5.0.45 to the latest version without stuffing up plesk/php/mysql?

Something like

portupgrade -Rv mysql

? Or is using portsnap not a good idea when updating mysql for plesk? Sorry, completely new to this and don't want to stuff anything up.

Many Thanks