Userfile is not writeable

The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful):
Gallery version:1.5
Apache version:
PHP version (don't just say PHP 4, please):2.0.18
Graphics Toolkit:
Operating system:xp
Web browser/version (if applicable):

Hi there,

We are in the proces of upgrading from 1.2 to the 1.5 version and when we run the upgrade file we get an error, it asks us to use the configuration wizard, and an error above it

Line 68 in the init.php file says - set_time_limit($gallery->app->timeLimit);

If we click the configuration wizard link we get another error

If it helps this is the link we are clicking

http://www.bike-pix.com/forum/modules/gallery/upgrade_album.php

I have followed the advice in the FAQ section about Warning: fopen(".../albums/team/album.dat.lock","a+")? and have changed the CHmod to 777 in the gallery folder, but still the same user is not writable error ...

What are we doing wrong ... ?!!

thanks!