My case is

Jan '06 - May '06 = F1
Jun '06 - Sep '06 = OPT
Oct '06 - Dec '06 = H1

So I'll be filing as a non-resident. My question is can I start a roth IRA and contriute towards the 2006 limit before the taxes deadline? Some brokerage firms require individuals to be residents to be able to open a roth IRA but are not clear as to what is a resident for them.

thanks...

Yes, you CAN contribute to a Roth IRA, regardless of whether you file as a resident or non-resident alien.