I guess it must be a language problem with me and trying to get you to understnad, that a) the EOS Utility will not launch in my machine, it wont today, it never has for as long as I have owned canon cameras.
It sounds to me like the root cause of the problem is that you have (or had) old versions of the software on the computer, and that's not working with the new hardware, and may even be interfering with the new versions of the software on your EOS 30D CD.
The old EOS Utility that you had tried to use in the past may not have worked for you back then. But the version that ships on your EOS 30D CD should work.
Normally I would recommend uninstalling every piece of Canon software that is supplied on your EOD 30D CD and which is also currently installed on your computer. That includes DPP, EOS Utility, the drivers, etc.
But since I don't know which Canon software you use and certainly don't know if uninstalling DPP (for example) will cause it to blow away your preferences, I have to be a little more conservative.
So: step 1 is to uninstall, at a minimum, the drivers and EOS Utility. Then reboot.
Step 2 is to install, from your EOS 30D CD, the drivers, EOS Utility, and anything else on there that you want (e.g., Digital Photo Professional) and which isn't already installed. Then reboot again.
Step 3 is to install all the updates from Canon's website, from the EOS 30D software download area, for the software that you installed from the EOS 30D CD. For good measure, reboot again afterwards.
Then try connecting your camera to your computer and running EOS Utility.
If any one of the above steps fails, please reply back and tell us the exact error message you got during that step.