Get Control Values from current form into new form

[tmort]

I have a form/subform that calls for dataentry. Many of the values on the
main form are comboboxes which I have the default set to get the first record
in the lookup table as ofen it will only have one item, but, somethimes
there will be several choices. The user could then select from the list,
enter some dates and projceed to enter corresponding values on the subform

I'd like to add a buttion to the form that you would press to get the go to
a new record and would like as well to set the values for some of the
controls to whatever the values are for those controls on the open form are.

Thanks for any ideas