seriuosly guys how to mine eth+sia with simpleminer? tried everything now....
who can share their command line?
or its not possible at all? im loosing faith

Refer yourself to claymore dual miner page. It is quite clear how to do it:
nanopool Ethereum+Siacoin:
EthDcrMiner64.exe -epool eu1.nanopool.org:9999 -ewal YOUR_ETH_WALLET/YOUR_WORKER/YOUR_EMAIL -epsw x -dpool "
http://sia-eu1.nanopool.org:9980/miner/header?address=YOUR_SIA_WALLET&worker=YOUR_WORKER_NAME&email=YOUR_EMAIL" -dcoin sia
nanopool Ethereum+Siacoin(Stratum):
EthDcrMiner64.exe -epool eu1.nanopool.org:9999 -ewal YOUR_ETH_WALLET/YOUR_WORKER/YOUR_EMAIL -epsw x -dpool stratum+tcp://sia-eu1.nanopool.org:7777 -dwal YOUR_SIA_WALLET/YOUR_WORKER/YOUR_EMAIL -dcoin sia