Greets Seeker,
I think the best option for them is to get ADSL, it's only 6500 ptas per month + taxes (rough total of $35) and it's being offered by 2-3 companies now: Telefonica, Wanadoo, and -I think- Retevision.
Connection is pretty good most of the time, and it averages 230kbps downlink and 120kbps uplink.
If you need more information, just ask!
Daniel, aka Cyrano