Assuming you have a non-upgrade cd-rom version of Windows 95 (and
a
generic cd-rom reader):
i.  Use one of the programs from www.bootdisk.com to create a
Windows 95
startup floppy.
ii.  Start the computer from your newly created startup floppy.
Then put
the cd in the reader.
iii.  type: format c: /b /u [enter]
iv.  Answer the first question in the affirmative.  When it
finishes it will
as for a label, up to 8 letters/numbers can be used.
v.  type: c: [enter]
vi.  type md windows [enter]
vii.  type  [F3]\options [enter]
viii.  type [F3]\cabs [enter]
ix.  type c[F3] [enter]
x.  type copy r:\win95\*.* [enter]
xii. {after x finishes} remove the cd.
xiii.  type setup [enter]

It will ask for the Product Key/Code.  This is normally found on
a sticker
on the cd case or the certificate on the Windows 95 manual.