how to trim the textbox in datawindow before insert in pb7?

Friends,

We have a user entry form...in that the users are entering the name column with some spaces and then name

for example without quotes.....   '      sathyguy'

so...i have to trim that text to 'sathyguy' before inserting or lost focus of that textbox....

is it possible only thru query or i can do it in the textbox itself.

thanks