after reading, reading and reading all post in this forum I drew the following conclusion: let's find a solution for year 2013 (because some of WIFI stick are no longer produced like - Edimax EW-7718Un, Dlink DWA-140 ver B1 and C1, or some are so expensive or so close to price of a Samsung dongle that isn't worth risking your money to buy a wifi stick and recompile it in linux, especially if you do not know linux ).
First of all, this solution can be applied in Europe (for sure) but it can be applied to wide world if you find this wifi stick to an online store that can send it to your country (I can't give you some online store because I don't want to make advertise for them).
Second of all, I would like to thank to the next users of this forum: erdem_ua, tehlbuh, efyzz, DiN0, Kleeschen, ymasgo, ulzf, Fane, ShangX, Oschy, bronny30 for their posts.
The WIFI stick that I'm talking about is HANA 62740 or 00062740, you can find some details over here: http://wikidevi.com/wiki/Hama_00062740
This WIFI HAMA stick it's an OEM Edimax - formaly know as Edimax EW-7718Un . It has Ralink 2870 chipset.
This stick work without any changes (as you buy, out of the box) with (for sure):
TV models
-T22A550
-T24A550
-B650T2W with original firmware 2004.1 and 2005.1 and no patches or add-ons installed
-B2230HD
-D450 LCD
-UE46D6000
-UE40D5500
-UE32D5500
-LE40C650
-C6000
-C6700 (to wor you must read this: viewtopic.php?f=9&t=1420)
BLURAY PLAYERS:
- BD-D5500 (test it on my own player)
This works with models with older firmware. With latest it is not detected, maybe after pid and vid change it will be vissible again.
Best regards from ROMANIA.