Hi Bratan,
Very impressive for someone who recently said
"Thanks! Honestly I don't really understand any of it (it's a little too advanced for me at this stage), but I will try! 
I need to read some more about SPI..."
Although I realise that that was specifically in regard to SPI, I wish that I could pick this up as quickly as you seem to have. Hopefully I can look through this code and try to understand how I can eventually write my first scrolling text code. 8) wish me luck Pedro.