I've got my file copied across and can see it in WinSCP sitting in the /opt/ folder on my n900, along with bounce and some other stuff. When I exit sudo gainroot to "run as user" (thats right?) and type in the command by the $ prompt "python helloworld.py" it cant find the file ("No such file or directory"). Do I have to navigate first to the /opt/ folder and run it from there?

BTW my next question would be, how do I navigate in xterm .. but you knew that already