Still Struggling With Flat File Into Multiple Tables

So here's the issue

16 flat files all fixed width. Some over 350 columns.

Open flat file 1

extract id and go see if its in table 1, if true update table 1 with first 30 columns

otherwise insert into table 1 first 30 columns.

goto table 2, lookup id, insert/update next 30 columns...etc..etc..for 10 different tables

So I've got my flat file source, I do a derived column to convert the dates, i've got a lookup for table 1, then 2 ole db commands, 1 for update if lookup successful, 1 for insert if lookup fails.

How can I pass the id as a param into the update command so it updates where x = 'x'

also I need a pointer on doing the next lookup, eg table 2, would I do this as some sort of loop?.

If you can help great, but, please don't just reply with "I'd use this object"...then no explanation of how

v.v.frustrated newbie to SSIS