I actually registered to post the exact same question. cudaminer claims my lowly gtx660 is getting 178kh/s (seems awful high), but none of that work seems to be going to the pool. I'm using a stratum proxy to connect to eu.wemineltc.com:3333. Despite the great numbers coming out of cudaminer, I don't think it is actually _doing_ anything. My GPU reports no activity via MSI Afterburner. Being a newbie, I'm sure I'm doing something wrong
Proxy started with:
mining_proxy.exe -o eu.wemineltc.com -p 3333 -oh localhost -sh localhost -nm
cudaminer started with:
cudaminer -o
http://localhost:8332 -l S1x4 --user=myworkername --pass=myworkerpass
(The S1x4 parameter is what resulted after the autotune pass.)