Some other good free alternatives to Photoshop are Gimp and Paint.Net.
I just got Paint.NET. It has many features of both Photoshop and Paint Shop Pro. Good thing is that Paint.NET doesn't tell me to enter a registration key, serial number, etc. It's completely free!
More city screenshots coming soon. I still have to make textures (that's what Paint.NET is for). That steep hill will lead to the Future section once I've started building it. There will also be a speed track going from the Prehistoric Section to the Future Section.
Here's an Ice texture for the big mountain:
1024x1024 (Black means transparent)
All I need to do is convert it to TGA with Paint.Net, then convert it to tex with the TexManager and assign it to the z3D file before export.
Here are a few questions:
Where can I find good road and sidewalk textures for free? (asphalt, concrete for the bridges, construction barriers)
Where can I get 3D model files (Animals, Cars, Trees) for free? (Important for the designing of this city)
How do I make invisible roads? (very important for the Future section)