Hi

Im new here and pretty new to Unix.

Just a couple of questions

How can I tell what version of Unix I'm running?

and

Also I hope this makes sence, when writting scripts/programmes does it matter what Im writting it in? ie what shell? Or is it just identical whatever shell Im writting in?

Hope that makes sence, sorry Im a REAL nubee

try the command:
uname -a

when you are writing a script it dosnt really matter what shell you are in, if you are using a text editor such as vi. but when you run it make sure you are running it with the right program.