Don't just say it doesn't work but describe in detail what is happening and add the following information:
* VirtueMart version
* CSVI version (Latest is not a version number)
* Sample of the file being imported
* Collected debug information
Without this information you won't get a useful answer. If no debug log is attached, you will get a request to post it.
CSVI SOBI only runs on Joomla 1.5. If you are running SOBI also on the newer site I would think the simplest and fastest way would be to copy over just the SOBI tables from the old to the new database and then install SOBI on top of it.
That extension is what you need to fill your VM store with products! it's not hard to understand how it works (just read the manual) and if you need anything they have a forum that aswers to EVERYTHING! I just love this extension and is a part of my store-maintenance tools! It's a pity not to mention that this roland guy is awsome when it comes to support!