The power can be solved quite easily, but some soldering technique is required. If you take a look at the left picture you can see which pins from the powerconnector produce what voltage. Picture is taken as a frontview. Connect the ground and the +12V line to the fan. Take the floppy powerconnector and merge the 5V line from the powerinput together with it. Reconnect it again and you have succesfull modyfied the powerlines. BUT, do not merge the ground wire with the floppy connector, although it might work, the powerline is far more stable when you do not reround the ground wire. If you want to be sure you cut the right wire you need to measure the connections with a multimeter. And please, don't forget to switch-off the computer !.