F1 and H1B status in 2008
I'm in US since Aug 2006 with F1 visa (and F2 my spouse).
Nothing changed in 2007, and I didn't leave US at all.
Then in June 2008, my visa status changed to H1B (and H4 spouse).
I am also receiving tuition waiver as employment benefits (I got the 1098T form).
Spouse does not have ITIN and never filed any returns in US.
I have always filed 1040NR-EZ (for 2006 and 2007) but didn't claim spouse these years (on F2)
My question is whether I have substantial presence in US after 3 years or not, and which form should I file. How about spouse (with no ITIN)? Thank you.