you need a windows95 startup disk, click here download, put a blank floppy in the drive, double click the downloaded file it will write a floppy startup disk for you.
use the startup floppy, at the menu choose start without cdrom support
once at the prompt A:> type
once done, take out the startup floppy, put in disk one of win95 and type A:/setup (might be A:\ setup) cant remember now
or just type A:
that will start the install of win95.