Thanks for all the input! I went in to see if I could change the register file too. It's a bit untested, since I haven't set up a new account on my site to see if it works, but I shouldn't cause any errors. Let me know if it does!
Under registerview.php, find these lines (should be 45-53):
PHP Code:
$additionalField->add(new Comment("Gender: ", FALSE, "b"));
$additionalField->add(new Comment("Male, Female or Not specified"));
$genderList = new RadioList("gender");
$genderList->add(new RadioButton("Male", "gender", "male"));
$genderList->add(new RadioButton("Female", "gender", "female"));
$genderList->add(new RadioButton("Unknown", "gender", "unknown"));
$genderList->check("unknown");
$additionalField->add($genderList);
and replace it all with this:
PHP Code:
$additionalField->add(new Comment("Gender: ", FALSE, "b"));
$additionalField->add(new TextField("gender"));