Prerequisites package uses innosetup. Docs are here
It's best to make the image in several steps unless you have adobe photoshop.
- Layout the graphics using something like Adobe photoshop. Inkscape also will work. I used affinity photo.
- save as transparent .png @ 300 dpi.
- Go to https://cloudconvert.com/png-to-bmp and convert to .bmp
Bearsampp is a portable application therefore there is nothing to install except the prerequisites package. This provides the various Microsoft code libraries that are used. If you already have them installed, and its possible you already do, they will not be installed again.
For each release there are "Upgrade notes" provided to guide you on how to upgrade.
By default, the user is "root" with no password
The user is postgres and there is no password for this user.