Maintenance Mode

[tesser]

I find the standard Maintenance Mode page plain and boring

i have created my own page and its in the form of a php file is there any way i can  add it into smf so when i tick Maintenance Mode it goes to my own page and not smf's??

i can do it by naming the file index.php  and renaming smf's index.php  but this is a pain at times

any ideas on how to ?