Add a column with 2 characters and a 7 digit auto incrementing number

[MitchMitch]

I have a table with about 2 million records that I need to add a new key to. The key needs to be two letters (ML) and then a 7 digit number, starting with 1 and it auto increments. (ML0000001 for example)
Does anyone have suggestions on the easiest way to do this? It appears that Sybase doesn't have sequence's like Oracle, where I could do this easily.
Thanks!
Mitch

 

[MitchMitch]

Also, I don't need tohe column to continue to autoincrement. I will do this in my code. I just said autoincrement to explain thatI don't want to have to increment it manually on initial input.