Downloading should not do any analysis of the file, so it would look as if your computer is still not 100% happy after the reinstall of Vista. I'm not at present on a Windows computer so am working from memory: go to Control Panel, System. I think that opens to display tabs. Click on Devices (Hardware) and a missing device will show up with a yellow exclamation mark on it. You need to find and install drivers for this device. But normally, when Windows starts up it will nag you for drivers for such devices; if it doesn't do so, the message may come from some rogue program.
Only download from http://www.openoffice.org
or as redirected by its loadsharing. If that site appears to throw up the device missing error (which device?) before downloading the file, terminate the attempted download and sort out the "device missing" problem. It is possible that there is still a trojan or other malware on your computer giving such a message in an attempt to get you to download its patent malware. In addition to using an up to date virus scanner at its most aggressive, you may need to do a malware and adware scan. Good scanners for these are Malwarebytes and Adaware (from Lavasoft). Only download from their home sites (or as redirected by their loadsharing) http://www.malwarebytes.org/
to be certain you are getting clean latest versions. If the attempt to download either of these also gives a device missing error then the problem lies on your computer. If you have a computer knowledgeable friend do ask for assistance, as two heads are better than one.
Until this problem is sorted out, do not waste time installing your software of choice or customising your machine; you may yet have to reformat your hard drive and reinstall Windows Vista. If you have not a certainly clean installation disk for that, you might consider migrating to one of the Linux distributions, but this is a paradigm shift; don't do it thinking it is a trivial change, it is most certainly not. You can run most Linux distributions from a "live CD" for test purposes, but such a change of operating system is not to be undertaken lightly.