lookup for a cell value in entire sheet and return value from a column

Hi,

I have a sheet with Customer name in the first column and next 7 columns have unique serial numbers(alphanumeric) of the systems which that customer has purchased. In another sheet, i have the unique serial number in first column and I want to search this number in the 7 columns of other sheet and return the "Customer name" to this sheet. How do I do that ?

Vlookup searches only in 1 columns, so does match index. lookup didn't work as well.

Any help will be appreciated.

Thanks

Atul