loading data for newb

Hi,
I'm creating my first set up database's in postgres, my first db's every
actually, and I have some questions about how to load data into one db
in particular.

The file i need to load is an USPS file, the tiger zip+4.
here is the data layout:
Field Field Logical Relative Position
Number Description Length From/Thru
01     ZIP Code     05    01 05
02     ZIP+4 Code   04    06 09
03      TLID          10    10 19
04    Carrier Route04    20 23
05      State Code   02    24 25
06      County Code  03    26 28
07      RL Flag      01    29 29
08Census Tract Number 06   30 35
09 Census Block Number 04 36 39
10 From Latitude     09    40 48
11 From Longitude    10    49 58
12 To Latitude       09    59 67
13 To Longitude      10    68 77
14 PMSA Code         04    78 81
15 CMSA Code         04    82 85
16 Multiple Match Indicator 01 86 86
17 CRLF              02    87 88

sample data:
778011000  21813913C05148041R0006044001+30650898 -96376141+30648998
-96376541    1260
778011001  21813912C05148041R0006044000+30650898 -96376141+30650998
-96377741    1260
778011002  21813912C05148041L0006044001+30650898 -96376141+30650998
-96377741    1260
778011003  21813891C05148041R0006044000+30650998 -96377741+30651252
-96378998    1260
778011003  21813889C05148041R0006044000+30651252 -96378998+30651298
-96380241    1260Y

Could someone give me pointer on how to load the data and split the
column at the appropriate point? I've used the the COPY command but that
was for a simple two column file for county fips codes.

Thanks in advance,
James