Changing the power requirement for the PS3 or any electrical device involves more than just changing the cord to one that will plug into different electrical outlet.
using step up transformers
No.
Plug the cords in to the A/V spots, then plug the other end of the cord into the corresponding spot on the PS3.
It depends in which country the equipment was purchased. If the country's voltage is 220 volts then it is most likely the supply needed for the PS3 is 220 volts. Check the nameplate on the device to see what the manufacturer recommends and stay at that voltage.
ps3
Each PS3 accessory comes with te cord needed to attach it to the PS3.
Gamestop will most likely replace your PS3, If you Warranty if it is still "Valid"
There is the A/V cable which can be replaced with an optional HDMI cable. The Charging Cable which is a Mini USB and a Full size USB at the other end. There is also a Power Cord. They can be an Ethernet Cable for a wired online connection, but it would not be part of the PS3 equipment in the box
replace it
Get the PS3 you can keep using the windows version you have and replace it when you upgrade the computer
By definition, Bluetooth is wireless, so no you cannot. There are USB headsets with cords that you can use with your PS3. The official Sony headset does have the ability to let you talk while it is charging in the charging cradle.
Only the ones that came with the PS3. The A/V cable that comes with it will let you connect to a TV in 480i and if you want better then you need to purchase a HDMI or similar cable. The USB USB mini cable that comes with the PS3 will let you charge your controller.