Dark Blood, I recently looked very seriously into moving to the US.
The easiest way into the US is via a fiancees visa. You will of course have to satisfy all the rigorous checks placed on this kind of visa and should the relationship break down your visa will be revoked within a certain number of years. Don't enter into this lightly though, it does require some sacrifices.
The other way, the one I persued was a work visa. My company very kindly offered to transfer me to our office in Orlando, but again there are rigorous checks i.e. can an American satisfy the job spec. The bonus with this over the fiancees visa is parole, you can come and go as you please through immigration (I believe?). With a fiancees visa there are restrictions, and you may need to apply to leave the country otherwise your green card application may have to be started over. Of course, finding someone to sponsor your visa maybe a problem as they are quite expensive, you would have to be a worthwhile candidate for the job.
In fact, don't bet on either route being cheap.
If you're keen to live in the US I would strongly recommend spending some (a lot) of time there, it's not everyone's cup of tea. For me, the decision not to go to Orlando was kinda helped along by the four hurricanes that blitzed Florida so my fiancee and I reside in the UK for the time being.
Also, there are a number of ex-pat websites out there.