I have a table of Opportunities (records of client calls) that I would like to upload into our SF database. I have downloaded our contacts/accounts into a csv file to get the Account ID, which I understand is how I link the calls to the accounts. How to I populate my Opportunities worksheet with the Account ID column so the data will match up when I upload back into SalesForce. I'm not as technical as I like to think I am, so please dumb it down! Thanks.

I have a table of Opportunities (records of client calls) that I would like to upload into our SF database. I have downloaded our contacts/accounts into a csv file to get the Account ID, which I understand is how I link the calls to the accounts. How to I populate my Opportunities worksheet with the Account ID column so the data will match up when I upload back into SalesForce. I'm not as technical as I like to think I am, so please dumb it down! Thanks.