Postnuke Gallery 1.5.1 to 2

G2 URL (optional):
G2 version:
G1 URL (optional):
G1 version:1.5.1
G1 character set:
PHP memory limit:
--
PHP version (e.g. 4.3.11): 4.3.11
Webserver (e.g. Apache 1.3.33): Apache/2.0.55 (Win32) PHP/4.3.11
Database (e.g. MySql 4.0.11): MySQL 4.0.26
Activated toolkits (e.g. NetPbm, GD):
Operating system (e.g. Linux): 2K3 Web
Browser (e.g. Firefox 1.0): IE7/Firefox

I am wondering if there are any special requirement to upgrade from v 1.5.1 to the latest stable build of two if it's part of a postnuke install? I started following the instructions found at http://codex.gallery2.org/index.php/Gallery2:migration but I wanted to verify there was nothing special I needed to do because it's with postnuke.

Any help would be appreciated!
Thanks!!