Split Txt File Into Multiple

How can I split this incoming file into separate txts.  I want to cut out each Header/detail row section into a new txt.  What I mean by header/detail row:





incoming txt file:



http://www.webfound.net/split.txt

basically want to cut out each section like this:

http://www.webfound.net/what_to_cut.txt

http://www.webfound.net/rows.jpg



and a kicker...each new txt name must use a certain field (based on x numbers in header row) followed by another field whcih is the date form the header row.  somethign like this:



SUBSTRING(InputFieldBigString,LEN(InputFieldBigString) - 59,4) == "HD" + SUBSTRING(InputFieldBigString,LEN(InputFieldBigString) - 1,8) == "HD" + .txt

I need some hand holding here, it's my first time trying to do something so complicated in SSIS 2005.  If I can first just get the txt split into multiple, that would be a big help.