In reply to hindu: its all there is cs2, i couldn't tell you were or how, but it is as i've done it! think its under image or filter??? but i've got cs3 now, so can't check for you.
for stiching, i think its called real viz sticher, i've not tried it myself, but its meant to be very good.
www.7dayshop.co.uk used to do a cheap pano head, but they stopped doing them before i got round to buying one.
with all these things, ie HDR/stiching, using a tripod when you capture the image will save you ages in photoshop or whatever.