I recently browse through some threads, and to find there has someone talking that many obd2 tools still designate to run on Windows XP operating system, while the fact is that Win 7 is quite popular now.
If you do not have a XP computer, you will need to install a virtual machine (VM) and run Windows XP in it. Here take VIDA DICE diagnostic tool V 2014A as an example to show you how to install it on Window 7 computer.

The file pointed by red arrows is the "Volvo dice software" And the "TXT file" is the installation instruction And the detailed steps are as follows..:
1. Run the CD-ROM, select the languages: (eg English-Great Britain) and wait till the setup process finishes, and then restart the computer.
2. After restart the support icon will appear (VIDA Status: Running)
3. Operate the patch: VIDA2012D_patch \ VIDA2012D.exe (remark: do not change the path Leave the "C: \". Value).
4. Start "VIDA All-In-One".

After installing a Windows XP VM and VIDA / DICE software, it would not too hard to use. The user interface is quiet clear and you can kind of figure out where to go and what to do.

One thing that is very nice about a VM / XP installation is that it is kind of like a virtual computer that is independent from the rest of the computer. So interference with other software will not exist. It is kind of like making a dedicated computer (be it virtual) for your VIDA / DICE software. If you are not too familiar with VM, probably check with any friend that knows.

http://www.aobd2shop.com/search/?q=VXDIAG

Instruction on VIDA DICE Software Installation on Win 7 Computer