downloaded the cgminer you pointed to

edited the "example" bat file with my info --

ended up with  cgminer.exe --scrypt -o stratum+tcp://stratum.f2pool.com:8888 -u xxxxxx -p xxxxxx --scan-serial \\.\COM3 --zeus-chips 256 --zeus-clock 234
pause

getting :-

zeus detect: test failed at \\.\COM3: got 00000000, should be 00038d26

repeating except for new block report and work restarts.

will have a go with BFG later I think

thanks