Make a bigger text box for new field in User profile

Hi,

I have made a new optional text field for the user profile ("About Me", Max Character Limit 5000). Now I want the text box, where users will enter data during or after registration, to be at least as big as the default "Comments" field. How can I do that?

I think some script may have to be changed and that is why I am posting it here. Hope, this is the right section.

Regards,
boithok.admin