Computer Re-Caseing

[Loxa]

Hey,
ive recently just purchased a new case for my computer and im wondering how simple it would be to swap all compents from one to the other. Ive never done this before so im abit scared about how safe it will be

 

[Loxa]

Thanks a lot for all the replys reading through makes me feel a lot more confident about it, the case i have ATM is a Packard Bell IXtreme

http://www.testberichte.de/imgs/p_imgs/Packard+Bell+Ixtreme+MC+9740-104-104632.jpg

Not this exact system just the case. The motherboard is a pheonix if i remeber correctly

The case i have just bought from Overclockers is a Sharkoon T9

Other compents im moving are, OCZ 750w, geforce 250 GTS, dvd Driver, x2 350gb harddrives and im installing a new fan onto my CPU which is a coolmaster evo 212