Macro for copying data from one column in sheet 2 based on two criterias in sheet 1

Hi.

I've been struggeling for quite som time on how to perform this task with the help of macros.
I have a workbook with basicly two sheets.
Sheet1 is the main sheet, but I'm missing som data in the column "IB". This data is in another sheet. I would like to create a macro that checks the cokumns company and accountnumber i sheet1 against the same information in sheet2, if correct then copy the corresponding IB cell and paste into sheet1.

I hope someone can help me with this?

Best regards!