How To Split Out Table Rows Into 3 Tables

I imported all rows of my txt file using SSIS 2005 into a table.  I am now trying to figure out how to split out the header, payment rows, and maintenance rows.  First, some information.

An example of table results is here:
http://www.webfound.net/split.txt
The table has just one field of type varcha(100) because the incoming file is a fixed length file at 100 bytes per row

The header rows are the rows with HD in them...then followed by detail rows for that header (see here http://www.webfound.net/rows.jpg).

I need to

1) Split out the header into a header table
2) Split out the maintenance rows (related to the header) into a maint table
3) Split out the payment rows (related to the header) into a payment table

I'll need to maintain a PK/FK relationship between each Header and it's corresponding maint and payment rows in the other 2 tables.

To determine if it's a payment vs. maintenance row, I need to compare chars 30 - 31.  If it contains 'MT' then you know it's a maintenance row, else it's a payment row.

How in the hell do I do this???