While installing Gallery2, after getting Apache installed on windows, I found that I needed to create a directory that was writable by apache so it could store my image files. I eventually found an article. It wasn’t about Gallery2, but it was close enough.

Basically you have to:

1. go to a user’s “Local Settings” folder (ex. “C:\Documents and Settings\Default User\Local Settings”).
2. Create a “web” folder
3. Create your writable folder (ex. “C:\Documents and Settings\Default User\Local Settings\web\writable”
4. Add the folder to the end of your apache configuration file (ex. php_value session.save_path “C:\Documents and Settings\Default User\Local Settings\web\writable”)

That’s it. That’s all I had to do.