It's not really appropriate to ask how to pirate games here, but here's a general outline to backup your VC titles:
1. Dump your Wii's NAND with a file system dumper homebrew app
2. Find the VC game's title folder (found in WII_FS/TITLE/00010001/xxxxxxxx, try opening 00000000.app or 00000007.app in the folder in a hex editor, near the beginning of the file you should see the game's title)
3. Find the associated ticket for the title (found in WII_FS/TICKET/00010001/xxxxxxxx.tik, same number as title in step 2)
5. Find BlAzE's WADpacker
6. Copy all of those files into a folder together and use the WADpacker to make an installable .wad
7. Install the .wad on your Wii using waninkoko's wadmanager homwbrew