Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
You click the "import" tag, copy the pokemon words from the thread thing. On the play site, click the teambuilder thing, import/export, and just copypaste the pokemon words into the box and click save. Click OU and it should just have the teams uploaded, click battle. No breeding required.
The five-minute mark point on this video basically explains how to do that.