schema.ini problem~~

Question

Hi, experts~~~ I have a question about how to import several TXT files into ONLY ONE Access table via "schema.ini"~~~

I read some materials but still cannot find a way to do this.
http://support.microsoft.com/kb/230265
http://www.dbforums.com/microsoft-access/1644528-import-fixedlength-text-file-access-table-using-schema-ini.html
http://support.microsoft.com/default.aspx/kb/199068
http://msdn.microsoft.com/en-us/library/ms709353(VS.85).aspx
http://support.microsoft.com/kb/210001

My task is:
1, I have several TXT files named P1.txt, P2.txt, P3.txt...... Pn.txt (n is changing for every month, and some files will exceed 65536 rows so I cannot use Excel to sum them)~~~
2, I want to import all these n files into ONE Access table named Ptotal~~~
3, All these n files have the same structure, just from different Company Sub-groups~~~
4, Sometimes we will change the import specification~~ We change this specification almost every 2 months~~~ But most of the changing will be add or delete one or two fields~~~
5, My problem is I have to change the inbuilt import specification manually every time~~ I have totally 130+ fields in my specification and some fields have values like:
P1.txt: Access will treat this field as Number
Contract Number:
91
121

P2.txt: Access will treat this field as Text
Contract Number:
CB3
16
A9Q

Actually I want this field to be Text. So everytime I need to manually change the format of this import specification and then saveas~~ I prefer to use "Schema.ini"~~ Is there some way to build Access inbuilt specification via "Schema.ini"?~~~ Or just have to copy "Schema.ini" and use VBA to modify the first row of this ini file everytime?

I have some fake examples:
Schema.ini:
[P1.TXT]
ColNameHeader = False
CharacterSet = ANSI
Format = CSVDelimited
Col1 = Rate Double
Col2 = ContractNumber Char Width 255
Col3 = CustomerName Char Width 255

P1.txt:
14.090,"91","Killer"
4.01,"121","Dragonhunter"

P2.txt:
0.001,"CB3","Demon"
4.112,"16","Evil"
5.2231,"A9Q","Orc"


Thank you for your time. I really appreciate~~ Have a nice day~~~

Li Xiang - UNL Actuarial Science Student

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Li Xiang || UNL Actuarial Science Student || Good at Access/ Excel/ SAS /SQL || SAS is torturing me~~~ || Still looking for a summer intern~~~ || Anyone wants to hire me????~~~~