Finale 95 works on W7.  This program probably would as well.

The program would, but getting it off the floppy, how? 

 http://shop.deviceside.com/prod/FC5025
 
 I went to an estate sale last Summer and the person must have been in computer sales.  It was like a museum. There were boxes of those disks and they packaging looked like it was manufactured yesterday.  There were IDE hard drives.  I got a WD500 for $10.  I wish I would have bought the rest of them. My machines still have IDE ports and you can still get IDE enclosures.  There was also those PCI network cards that are not needed anymore.

Leadfoot
I can't see it, but that is cool. I can remember playing video games like Joust(remember the ostriches?) that were on 5.25 floppy on my Atari 800XL.

We actually had a Joust arcade cabinet for a few years in my house when I was a kid. That and a tabletop cabinet of the game Omega Race. (screenshot in link)
http://www.madocowain.com...ov2001/1cocktail_2.jpg

shawn@trustmedia.tv
I remember switching from Bars & Pipes Pro on my Amiga 4000 to Pro Audio 9 on a 500mhz PC...WOW! Real time sample playback and recording of multiple tracks...it was amazing! -S

Ah, my Amiga 4000 and Bars and Pipes. I think it was just about as good as MIDI ever got. As someone else said regarding another program. GUIs are more modern but the manipulation of the actual data hasn't all hat much.

i have a laptop with Windows 3.0,  A 20 meg hard drive and Cakewalk 3.1 that i loaded w/3.5 in disks.  I used
it for 6+ years in the 1990's and made good $$ with it.  I still receive royalty checks from music composed on that rig.
 
I'm pretty sure I can fire it up and and lock it to picture.  last time I tried it worked like a dream.   

shawn@trustmedia.tv
I remember switching from Bars & Pipes Pro on my Amiga 4000 to Pro Audio 9 on a 500mhz PC...WOW! Real time sample playback and recording of multiple tracks...it was amazing! -S

Bars and Pipes! Wow what a trip down memory lane. I doubt whether that name has crossed my mind in at least 20 years. 

Cactus Music
This thread got me looking at Tims page and then the Cubase page, Ya know, other than the GUI becoming better graphics. the options have not really changed much for piano roll editing have they? 30 years later and midi editing has improved very  very little. Put a smart tool on this editor from 30 years ago and you would have Sonars new version. 
 
 This track needs quantizing badly. Interesting reading the little history lesson they have posted too. 
 

I wish I had a piano roll back then. All I had was OctaMED and an 8-bit sampling cartridge. 
 

 
Ah trackers....the assembly language of music sequencers. It's amazing how quickly you got used to thinking about music in terms of those rows of numbers. 

Ha ha that's too funny as I actually could not get my head around any editing in Piano view for years. I did all my editing in what would be Sonars Event veiw. I too looks at songs by the math of the numbers, 12, 24 , 48 and 96. I think triplets where 8, 16 and 32. It all added up to 96 = a whole note.  
Oh my god did we waist time on that! Calkewalk's Guitar studio forced me to use Piano view editing because the event list was so bad compared to Dr T KCS. It still is. 

I remember that Cakewalk for DOS (midi only) had rock solid timing, and would load songs instantly - a great step forward from 2 mins per song on a QX3. Then the early midi sequencers for windows 3.1 were woeful - the midi timing would vary terribly. Ah - the not so good old says:) Certainly puts any little problems with the amazing DAW we have now into perspective.