Custom fields

Hi. All of my posts will each have 3 Custom Field key/value pairs, and all 3 keys are the same (e.g. key1, key2, key3) for every post I will write.

Is there a way so that when I want to write a new post, the “Write Post” page automatically has all three of these custom fields added, so I don’t have to go and manually select the key from the pull-down menu one bye one?

In other words, can I have the “Write Post” page already have these three text boxes created (for the Custom Field values), so all I do is just fill in the values?

I really hope this makes sense. Thanks in advance.

Amir