Macto to copy words from text file to excel

hi,
I need to writing the following macro,
Importing from a text file into Excel.
The problem is this:
I have a huge file (several hundred thousand lines), should go line by line to look for a specific word (each time a different word) and copy the word beside into an Excel file.

Search should be carried out by block rows that starts and ends with the word DES
The same word appears thousands of times and each time have to copy the word next to it.

An example of the text file:

DES NO
TN 002 0 05 03
TYPE 500
CDEN SD
CUST 0
DN 54216 0 MARP
ANIE 0
AST NO
IAPG 0
HUNT 58686
TGAR 7
LDN NO
NCOS 4
SGRP 0
RNPG 0
LNRS 16
XLST 0
SCI 0
SCPW 0000
SFLT NO
CAC_CIS 3
CAC_MFC 3
CLS CTD DTN FBD XFA WTA THFD FND HTA ONS
LPR XRA AGRD CWD SWD MWA RMMD SMWD LPD XHD SLKD CCSA-CSI TEND LNA TVD
CFTD SFD MRD C6D CNID CLBD AUTU
ICDD CDMD LLCN EHTD MCTD
GPUA DPUA CFXD ARHD OVDD AGTD CLTD LDTD ASCD
MBXD CPFA CPTA UDI RCC HBTD IRGD IAMD DDGA NAMA MIND
NRWD NRCD NROD SPKD CRD PRSD MCRD
EXR0 SHL SMSD ABDD CFHD DNAA DNDY DNO3
CWND USRA BNRD OCBD RTDA RBDD RBHD FAXD CNUD CNAD PGND FTTU
FDSD NOVD
RCO 0
PLEV 02
AACS NO
MLWU_LANG 0
ARTO 1
FTR CFW 5
FTR FDN 52127
FTR AFD 58686
FTR AHNT 58686
DATE 24 OCT 2012

DES ALEX
TN 008 0 00 00
TYPE 2616
CDEN 8D
CTYP XDLC
CUST 0
AOM 0
FDN
TGAR 7
LDN NO
NCOS 4
SGRP 0
RNPG 0
SCI 0
SSU
LNRS 16
XLST 0
SCPW 0000
SFLT NO
CAC_CIS 3
CAC_MFC 3
CLS CTD FBD WTA LPR MTD FND HTD ADD HFA HOR3
MWD LMPN RMMD SMWD AAD IMD XHD IRA NIA OLA VCE DRG1
POD DSX VMD CMSD SLKD CCSA-CSI TEND SWD LNA CNDA
CFTD SFD MRA DDV CNID CDCA MSIA DAPA BFED RCBD
ICDD CDMD LLCN MCTD CLBD AUTU
GPUA DPUA DNDD CFXD ARHD FITD CLTD ASCD
CPFA CPTA ABDD DELD CFHD FICD NAIA DNAA RDLA BUZZ AGRD MOAD
UDI RCC HBTD AHD IPND DDGA NAMA MIND PRSD NRWD NRCD NROD
DRDD EXR0
USRA ULAD RTDD RBDD RBHD PGND OCBD FLXD FTTU DNDY DNO3 MCBN
FDSD NOVD
CPND_LANG ENG
HUNT
LPK 2
PLEV 02
AST
IAPG 0
AACS NO
ITNA NO
DGRP
MLWU_LANG 0
DNDR 0
KEY 00 SCR 57509 0 MARP
ANIE 0
01 ADL 16
02 ADL 16
03 ADL 16
04 TRN
05 AO6
06 CFW 5 52795
07 RGA
08 ADL 16
09 ADL 16 9052234735
10 ADL 16
11 ADL 16 11
DATE 27 FEB 2012

I find the word first DES, then I need to copy the word next to TN next word by TYPE,
Whenever there next TYPE certain number (five types of numbers) so you have to look for another sequence of words)
I have a line starting for example in "TYPE" and copy the number 500 (near TYPE can be five types of numbers)
That is when I find the number 500 I need to copy what's next DN, CDEN, CUST, NCOS, and more.

If I have the number 2616 so I have to copy other words. like 500 end another/

Hope made ​​myself clear.

Thank you