DECIMAL EXTERNAL In Control File?

In a control file, the code is as follows:

load data
infile 'C:\Documents and Settings\xxxxx\Desktop\abc.txt'
APPEND
PRESERVE BLANKS
INTO TABLE table1

[code]...

When I run the above control file in sqlldr, I'm getting the error as
Record 1: Rejected - Error on table table1, column column3.
ORA-01481: invalid number format model

In the table the column3 data type is NUMBER(6,2).: The column size in table is 6 and position of column3 in control file is only 4. Also if possible let me know how the same data (send me 2 dummy records) which exactly works for the above control file especially for column3 where decimal number comes in the flat file.

For generating the flat file, for column3, i'm using LPAD(:value,4,0) in the select query column list.