can you change the file ext. of a pic and how?????

[DELEREIOUS]

can someone tell me how to change the file ext. my scanner saves pics with .max extention and its not letting me upload any help would be rewarded with a shoebox sixe post of old skool pics :king: :king:

[Mike Panic]

if your using photoshop - you can simply choose the file > save for web... function and select jpeg high or jpeg medium for web posting - generally 800x600 is a large enough pic for the internet