You cant move the PCI-E slot to another expansion slot. You'd never fit it in there with the other PCI or PCI-E slots on the board. The only way i could see that happening is if you de-soldie'd whatever slot was in your way and totaly removed it from the board.
PCI-E x16 Extention Cable:
http://www.mycableshop.com/itemdesc~...-FLEX16-15.htm
PCI Extention Cable:
http://www.mycableshop.com/itemdesc~...LX32-03-FM.htm
Standard PCI slots are 32bits@33Mhz
I believe the 64bit PCI slots are for U1 servers. (dont quote me on that though)