GUNZIP is not working properly

C:\DOCUME~1\Guest\Desktop\l>gunzip L.ZIP
L.ZIP: zip file has more than one entry

C:\DOCUME~1\Guest\Desktop\l>dir

 Folders of C:\DOCUME~1\Guest\Desktop\l
27/12/2010  14:30    <DIR>          .
27/12/2010  14:30    <DIR>          ..
27/12/2010  14:27            37.178 gunzip.exe
19/08/1993  09:53            39.910 GZIP.EXE
27/12/2010  14:16           197.387 L.ZIP
               3 files(s)        274.475 bytes
               2 folders(s) 37.616.959.488 bytes avaliables

C:\DOCUME~1\Guest\Desktop\l>gunzip -h
gunzip 1.0.7 (18 Mar 93)
usage: gunzip [-cdfhLtvV19] [file ...]
 -c --stdout      write on standard output, keep original files unchanged
 -d --decompress  decompress
 -f --force       force overwrite of output file and compress links
 -h --help        give this help
 -L --license     display software license
 -q --quiet       suppress all warnings
 -t --test        test compressed file integrity
 -v --verbose     verbose mode
 -V --version     display version number
 -1 --fast        compress faster
 -9 --best        compress better
 file...          files to (de)compress. If none given, use standard input.

C:\DOCUME~1\Guest\Desktop\l>