1.62 is out? Geez... I just updated to 1.60 last week.
At any rate, memtest86+ is really easy to install to a floppy: download the archive, unzip it and run the .bat file (install.bat, I think it's name). It'll ask you to enter the drive letter to install to (so make sure that there's a blank floppy in it), and bam. You're done in a few seconds.