error in installable file

[ravish agarwal]

Hi all,
I am trying to install cvs-1.11.20 on HP-UX. I downloaded the installable from cvshome.org (cvs-1.11.20-HP.gz) but when I tried to unzip the binary using gzip or gunzip it is giving following error

gunzip: cvs-1.11.20-HP.gz: not in gzip format

 

I tried with cvs-1.11.19 also But it is giving the same error. Please help me out

regards

Ravish