oracle10g - Load a structured text data file using only one control file -

i have text file need loaded have structure (badly, don't have permit change):

mm/dd/yyyy 24hh:mi:ss no_of_rec emp_id,empname,salary ..... 

ex:

12/24/2010 20:30:10 number_of_datarow_below e0001,smith,5000 e0002,john,7000 e0003,kewell,9000 

into 1 table:

emp(isheader, head_data_time, no_of_rec, emp_id,empname,salary) 

columns data type can flexible.

expected load result:

  isheader  head_data_time       no_of_rec     emp_id  empname  salary   1         12/24/2010 20:30:10  3                  2                                            e0001   smith    5000               2                                            e0002   john     7000               2                                            e0003   kewell   9000             

my solution: using 2 control files:
   1. first load header (using option load=1 , truncate mode).
   2. second load rest of data (using option skip , append mode).

is there resolving way use 1 control file?

thank you.

my sql loader rusty, not use when clause somehow?

into table emp    when rectype = 'e'     (rectype  position(1:1)  char,    ...) table emp     when rectype != 'e'     (rectype  position(1:1)  char,    ...)