Ok, then just add the backup pool on the command line, like this:
cgminer.exe --scrypt -o stratum+tcp://etok.smartmining.net:49663 -u XXXXXXXX -p xxxxxxxx -o stratum+tcp://the.backup.pool:port -u XXXXXXXX -p xxxxxxxx -T -g 2 -w 256 --intensity 13 --thread-concurrency 8192
you forgot : --failover-only before the second adress
I think it's better to not use --failover-only, this will allow the miner to submit work to backup pool if the primary pool is lagging, and not totally dead, thus yielding maximum performance.