btc to skirll/neteller/ecocard etc , how ? and cash out via card

[sbrzol]

how could i trasfer my bitcoins to an online wallet (skrill,neteller,ecocard) ?  
after it i could cash out via its mastercard
of course i can change btc at exhanges like mtgox but can withdrawal only to my bank account
but i do not know anything about taxation yet ( i do not trade btc,  i won my bitcoins via sportsbetting)
it takes time to know what i have to do
(tax authority will ask questions if i withdraw too much  )