Hi,
I believe you're making a good choice of country in moving into spain.
They have all the amenities you'll find in the US, for Example you can get an ADSL connection with 512 Kb upload and 256 Down for about 21 Euros ( 25 Dollars).
Also the banking system is quite advanced, so you won't have any problems wiring money or doing whatever you need to do.
The Night Life is unbeatable, you'll really enjoy yourself there, the women are very beautiful even though they don't make the effort to speak in a foreign language, so I suggest you brush up on your spanish.
I've lived and traded from Costa Del Sol for about two years, and I really enjoyed it.
I now live trade from Marrakech, Morroco, and find it absolutely fantastic over here, you'll find everything you have in spain except cheaper.
Good Luck in your Move.