How to change alphabetical phone numbers into numeric form?

[Jesse Shellabar]

I need this as basically as possible. This got sprung on me with only two days to work on it, and I really just don't have the time. All I need is to figure out how to write a program to change the alphabetical number (ex. 1-800-FLOWERS) into the numeric version (1-800-356-9377). Again, I really don't know much about this, the simpler the better! Any required programs would be helpful too. I've tried netbeans but it doesn't seem to compile as well. Thank you!

[Banfa]

Every letter is a specific number (the reverse is not true) so a simple look-up table (array) holding the number for each letter and a simple substitution algorithm should solve this problem.