'97 Bonneville Unlock Stereo Code -further help...

Question

Many Thanks for your instructions in how to find the Unlock Stereo code for my '97 Bonneville. I did get a 6 digit code.(022026)I don't know how to enter the code because it has zeroes in it and I don't know how to enter zeroes . I tried several different keys , I didn't want to try too many as I read somewhere too many mistakes results in a permanent lock.or is the code I need to enter 2226 ?Many Thanks