addy_010 said:SNIP!
If you wish to add me to msn I can be quite handy with builds, my system is nearly identical to yours aswell currently so should be able to help.
What you have said about the funny thing is either CPU ducting or a blower fan I think.
The 'extra floppy drive holder' is most probably the rear PSU vent to direct the hot air away from the rear intake.
Add me to msn and all will be clear in my pictures, can quickly explain everything then

Sag-Okia at zen.co.uk