NOTHINGISTRUE  OSX 10.6 compatible Version 7.0.1 is available here:

http://www.microsoft.com/hardware/download/DownloadResult.aspx?category=MK&type=Mouse&name=B75-00113&os=mac104x57&lang=en  
(Version 7.0)

MARC OPAS  This broke the functionality of my Microsoft Optical Trackball on my Dual 2.0 G5 running 10.4.11. Can anyone help me find the last version of the software, or help me restore functionality? I can't stand not having buttons 4 & 5 for back and forward!  
(Version 7.01)

STEVEN GOODHEART  From the MS website on 2009-09-02:

IntelliType Pro and IntelliPoint for the Mac version 7.0 is compatible with the 32-bit version of Mac OS® X 10.6 (Snow Leopard™). Microsoft Hardware is developing a 64-bit compatible version. This version will be availalbe on or before 10/2/2009. While in 64-bit mode, only basic device functionality will be available.

http://www.microsoft.com/hardware/downloads/default.mspx  
(Version 7.0)

MACINEN  What are you (or some of you) complaining about? Just because it's from Microsoft? Didn't you know there is mac-people in MS who are committed to doing mac-things.

Anyway, this driver works very well with my new Arc Mouse (white), amazingly solid driver. One of the good things is that there is this option "handled by mac os" in every choice of buttons (one advantage compared to f.ex. SteerMouse). Keep up the good work!  
(Version 7.0)

DER~BOT~HAUS  Well. I love my IME 3.0 with my Mac and these drivers have always corrected the really lame acceleration algorithms Apple does to their mice drivers. Can't ever use Apple drivers again.

Stop with the textbook "Once again MS..." makes you all look like raving sheep. MS's Hardware is top notch and I have never had an issue with their drivers.   
(Version 7.0)

OPTIMUS_PRIME  6.2.2 recognizes the Laser Mouse 8000 running Leopard.

all the buttons work and able to be customized even though the box says nothing about Mac compatibility.

So far so good!.....  
(Version 6.22)

CROPP  Leopard compatible 6.2.2 is available here:

http://download.microsoft.com/download/6/f/5/6f50ba7d-bce8-4d62-9208-0edf308bd047/Microsoft-Mouse-X-d203.dmg  
(Version 6.21)

XENOPHILE  WTF is Microsoft's problem with naming this driver? Their website says "IntelliPoint 7.01". The downloaded disk image is labeled as "Microsoft-Mouse-d260". Mount the disk image and within it is contained a file called "Microsoft Mouse Installer". The Finder's Get Info shows version 1.0.

I only installed the MS driver to see how it compared to my old workhorse, USB Overdrive. It worked well enough but I'll definitely be sticking with USB Overdrive.   
(Version 7.01)

MR.LON  More and more i get angry about this driver.

Developer, please tell me what it is so difficult

about to make this driver universal for all your

mac products???????????????????????????????????

TELL ALL OF US!!!!!!

Again i'm very dissapointed   
(Version 7.01)

FRANCIS  This version recognizes the Laser Mouse 6000, but there are 5 buttons on the mouse and the software only sees 4. I went back to an older 32 bit version, but it is a real pain to uninstall the new version once it is installed.  
(Version 7.01)