hello, i saw this and wanted to info you.
the sling box would be the way to go.
it has a small buffer about 10 seconds.
there is hosting co in the uk that will sling free view to you.
i tested the service and they are slinging at a rate of 1.5 meg to 2 meg.
they have no limit on bits per month.
you need a internet at a good fast speed in brazil.
if you have 3 to 5 meg/s it will work like a champ.
most internet will do good down load and slower upload.
here in italy we have 256k up and 7 meg down but the 7 meg down is realy 3 to 4 meg.
we ran the sling using the bbc 1 and itv from the uk hosting and it was runing between 1.2 to 1.5 meg/sec and it looked great.
i took the output to the tv and got very good picture.
to set up the sling at a friends house may not work too good.
i heard that bt and others may limit transfer per month and at 256k to 500k per sec the quilty may not look so good.
these hosting service have fiber optic and high speed upload and will give you good results.
some may offer dvr so you can record the shows and watch them on the weekend.
use a search and look slinghosting uk and there should be 2 or 3 that do this.
hope this info helps
ralph