Main differences in play between cash and tourney games?

[choccypie]

What are the main differences between cash and tournament play? I've played a few games of each ($0.05/0.10 cash and maybe a few $5 tournaments) and I find myself playing the same way in both, which I know doesn't work but I don't know why it doesn't [img]/images/graemlins/tongue.gif[/img]

How do you decide which starting hands you play in tournaments and what hands do you play in cash games? Do you play some hands in a tournament but not in a cash game, and vice versa? And why? I know you have to take into account position i.e. fold mediocre hands early, but are there hands that are good in tourneys but bad in cash etc?

I'm just starting out so please don't flame me ^^

Thanks for any advice!