depends on your volume.. i have a the cheapest possible sim only from vodafone, with sms blox ontop of it.. so its about 15/20 euro's i think? and you can send 1000 sms each month then. you can also go to those sms website providers.. but the reason i dont want to do that, if my internet is down.. it cant send me anything anymore.. (and not needing a 3rth party software)
comparison:
http://www.spryng.nl/prijzen.html 1000 sms cost you 110 euro,-
http://www.smstarget.nl/?page_id=91 same deal
http://www.1601sms.nl/sms-gateway.htm looks nice, but 9 cent (ex i think)
one of my old favorites, i used to have..
http://www.clickatell.com/ (still have a account somewhere on there) its a little but cheaper even perhaps.. (especially if you have tele2)
http://www.cardboardfish.com/products/p ... ml#LetterN looks cheap too.. never tried them..
anyways, check out also
http://www.1601sms.nl/sms-gateway.htm you can get a mobile sim only subscription with them, and you can have inbound too.. although if you use your own phone on the pc it will work just fine too.. dont forget.. sending a MMS is stupid.. just send a sms with a url of the picture (since i presume you have a phone with internet and a screen)
// Erik (binkey.nl)