First of all, you can find cheats for all revisions of Smash Bros here: http://gamehacking.org/?sys=ngc&q=smash+bros
The majority are in ARMAX format, which means they are encrypted. As far as I know, Dolphin supports both encrypted and decrypted cheats, but incase it does not, you can use GCNcrypt to decrypt these codes yourself.
By checking the Info tab in Smash Bros properties, you should see which revision your copy of the game is.
Deleting the first line (with the 08000000) is only required for certain titles under rev 6xxx/7xxx to my knowledge. However, this line is not required for Dolphin under any circumstances as it is only an activator/identifier line to bypass the system along with a Master code when using a real AR device on real hardware.
As for opening the .ini file and editing, can you not run notepad.exe as admin and then drop and drag the .ini file into it to directly edit it? Just a suggestion, as I've never used Win8.
The majority are in ARMAX format, which means they are encrypted. As far as I know, Dolphin supports both encrypted and decrypted cheats, but incase it does not, you can use GCNcrypt to decrypt these codes yourself.
By checking the Info tab in Smash Bros properties, you should see which revision your copy of the game is.
Deleting the first line (with the 08000000) is only required for certain titles under rev 6xxx/7xxx to my knowledge. However, this line is not required for Dolphin under any circumstances as it is only an activator/identifier line to bypass the system along with a Master code when using a real AR device on real hardware.
As for opening the .ini file and editing, can you not run notepad.exe as admin and then drop and drag the .ini file into it to directly edit it? Just a suggestion, as I've never used Win8.