Lookup value and get minimum value of date in that found row

Hi

I'm quite new to this VBA programming in Excel. I have a very specific problem where I need some help. I hope you are the people ;-)

I have a workbook (Report) from where the cell B2 have to be looked up in column A in the workbook Project_Overview. The lookup have to return the lowest and the highest date from the row in where the value is present.

Pretty pretty please, can somebody help me?!