Excel 2007 : Extracting a point in a grid

Well i feel like a dummy on this one. I would under normal circumstances think of myself as a expert in excel but this formula has got me stumped.

My goal is to take two points of a grid of values and return the intersecting data. this is a little diffrerent than saya month/year lookup where youa re looking up say June of 2009 to see the total sales.

what i am trying to do is simplify how my colleagues do their work by creating a "template" for processing data. so lets get into it shall we?

in column D we have a store number, in column A we have the corresponding store number and in column B we have the skus that are available at those stores. unfortuantely our system does not spit it out anyother way hence the reason why i am compiling in excel.

in row 1 from column E on are the corresponding skus that i need to reference. my goal is to match the column E with each sku and if it exists place an X in the coorensponding cell.

i.e. becuase store 1 has sku 7278203271 cell E2 would have an X... skipping forward to a situation where we would not have a X marked would be where store 1 does not have 7771115767 cell BP2 would be left empty.

once i get each row (store) with a list of skus in a grid i will be able to complete my compiling.

Thanks in advance for your help,

if you have any questions tha tyou need help with feel free to contact me and I will assist.

well i am not able to upload the file for some reason. please download it from here. http://www.indigorhayne.com/lookup_sheet.zip
http://www.indigorhayne.com/lookup_sheet.zip