Hi Jim,
First of all thanks to Tanya for her answer.
Just to add further , if you are running multiple projects withing single ProjectSuit , it is better to maintain "ProjectSuit" variables.
One more thing , if you want operating system related information , you can use "Sys" object for the same.
Here are the properties / methods you can use to fetch the particular information.
1) Sys.
HostName :The name of the current computer.
2) Sys.
OSInfo : Returns the information on the currently installed operating system as
OSInfo object.
3) Sys.
UserName : The name of the user under whose account you are currently working.
For database Name : you have use data loop or create a ProjectSuit / project variable and define value for it.
I hope this has been of some help.