MYSQL stored procedure import fixed width text file

I am looking to import a large dataset from the IRS located here:
http://www.irs.gov/uac/SOI-Tax-Stats-Exempt-Organizations-Business-Master-File-Extract-(EO-BMF)
at the bottom of the page are file regional files, here is one of them:
http://www.irs.gov/file_source/pub/irs-soi/eo1.zip

The file is an ascii file with fixed width columns as defined here:
Position(s)      Contents

  1   9      Employer Identification Number (EIN).
 10   79      Primary Name of Organization.
 80   114      In Care of Name.
115   149      Street Address.
150   171      City.
172   173      State.
174   183      Zip Code.
184 - 187      Group Exemption Number.
188   189      Subsection Code.
190            Affiliation Code.
191   194      Classification Code(s).
195   200      Ruling Date.
201            Deductibility Code.
202   203      Foundation Code.
204   212      Activity Codes.
213            Organization Code.
214   215      Exempt Organization Status Code (New)
216 - 221      The Advance Ruling process is obsolete as of July 2008. These positions will be blank or zeroed out. For further information, please check the URL below: http://www.irs.gov/charities/charitable/article/0,,id=185568,00.html:
222 - 227      Tax Period.
228            Asset Code.
229            Income Code.
230 - 231      Filing Requirement Code.
232            PF Filing Requirement Code. (New)
233 - 235      Blanks.
236 - 237      Accounting Period.
238 - 250      Asset Amount.
251 - 263      Income Amount.
264      If the Income Amount is negative this contains a negative sign.
265 - 277      Form 990 Revenue Amount
278            If Revenue Amount is negative this contains a negative sign.
279 - 282      National Taxonomy of Exempt Entities (NTEE) Code.
283 - 317      Sort Name (Secondary Name Line).
318            0A - Line Feed

This data is updated monthly and I would like to have a stored procedure that I can run to grab the file and import it to a table with the appropriate columns without having to redefine all the column widths each time.

I am both a novice at stored procedures and have never used Load Data InFile (which is what the other forums suggested).

Could someone show me the template of what the stored procedure should look like so that I can see how to define the different column widths (just show a few and I can figure out the rest).  

What I imagine doing is uploading the files to the server then having a script on my server run that will call the stored procedure with a parameter of the file name to import from (there will be 4 files in total that I will be needing to import).  Since all the files have the identical column width structure and just have different file names that should allow me to repeat this processes as often as needed.