there is some kind of software mod for the wii but a mod chip is much better I can't help you much on the soft mod because I have never used it.
The best way to copy Wii discs is to go to Megaloot4u.com and buy one of the LG drives and use raw dump then use IMGburn to burn the image onto a DVD-R
For blank discs I use these
http://www.newegg.com/Product/Produc...82E16817294007
They are a little more but well worth the price as the Wii seems to be very picky about what media it will read
If you are not comfortable installing a new drive into your pc then you can get a IDE to USB adapter and plug the drive into a USB port on your pc