I would really appreciate some advice here - I just got my first road bike off craigslist. It came with pedals - Wellgo RC713 - but not cleats. I made the mistake of ordering shoes without thinking through the compatibility issues. The shoes are Northwave Vertigo with a three bolt pattern on the sole (just got them because they were new and cheap - $39).
The Wellgo website says these pedals are 98A and Shimano 51 compatible. I'm not 100% sure what that means, but from what I can put together it looks like I may need a shoe with a two bolt pattern instead of three.
If I'm wrong about that, which cleats do I buy to make my shoes and pedals compatible?

Thanks much!!!