.NET Web Setup Problems

[Jawor]

Hi,
I try to make Polish Language Instalator for my Web application.
I have some problems with replacing english text with polish content.
For example, on the Welcome Screen I have: "Welcome to [my product name]
Wizard" .
How change this text? On the welcome screen properties window i don't see
it. I realized that this text change when i'm changing global properties
called "Localization". But there is no polish localization .

How to replace english labels on buttons like "Cancel" "Next" etc?

Regards.
Jawor