Hello, I had a question if you don't mind. (or anyone else)

I've types in the below but I seem to get an error. Am I doing this right?
C:\miner\mining_proxy.exe -o stratum.bitcoin.cz -p 3333 -gp 8332
C:\miner\mining_proxy.exe -o eu-stratum.btcguild.com -p 3333 -gp 8333
A deprecation error? I'm new to this stuff, slowly getting my head around it all.
The syntax seems correct, you should paste the error by copying it from cmd.exe, use the app menu (upper left corner on the icon) to select (mark) the error text and hit Enter to copy, then paste here.