The DataTrak download system includes a unique piece of hardware
called the "Memo Mouse." It's not a mouse in the conventional computer
sense; it's a memory device between the dive computer and the personal
computer. What's it for? The Aladin dive computers store only 200
minutes of dive time in fully detailed form--say, four dives. After
that, the newest dive starts overwriting the oldest. But if you take
the Memo Mouse on your dive trip, you can download to it and store up
to 66 hours of dives--and leave your laptop at home. When you get
home, you download from the Memo Mouse to your laptop
So, I am not sure that you are looking for a software recommendation. You probable want to buy a cheep one, or make one yourself.
I presume that you also asked around, and posted on local diving forums, asking for a loan of one?
There is currently one on eBay for Eur 69, which seems a bit stiff (although cheaper than the original cost of $300).
Since you are handy, maybe you can get the plans and build your own? Also, try asking at https://electronics.stackexchange.com/ if anyone knows how.
From http://translate.google.de/translate?hl=en&sl=fr&u=http://www.plongeur.com/forums/showthread.php%3Ft%3D16100&prev=search (translated by Google from French to English)
Yes there is a "free" project MemoMouse clone. it's here: [You must
register to see links.] But it takes some work.
Below that, someone else says
Indeed, € 20 is more than interesting stuff ... but I'm not at all electronicien
Is there someone on the forum capable of mounting this kind of device?
Again, there is a link, which presumably tells you how to build a MemoMouse clone for Eur 20, but, again, you need to register to see it.
There seems to be a solution using a Palm Pilot (you might get luck & pick up an old one cheaply on eBay).
The same page says that "A Web Site has details of how to build your own mouse. If you are handy with electronics, I am sure that you could build one very easily and cheaply" - but, alas, the plans are no longer there. Perhaps you could contact the owner of http://nuro.republika.pl/genie/indexe.htm ? Or email the guy who posted the plans to build the interface - he mightknow.