Question about Power Query

Hi, 

With the help of PowerQuery in Excel 2010, I am able to run queries from my local db in Excel itself. But every time I run a query, It generates a new sheet. Can I specifically mention that this result should go into this specific row/column. Also, can I actually take some values from the Excel sheet itself and use it in PowerQuery while querying? If there is a way to do it, please explain the steps.

Thanks in Advance,

Venu