ok, long story cut short, I currently use LR5, and have just bought LR6, not the upgrade, but the whole thing as my copy of LR5 was bought through some loop hole, deregistered thing. so presumably it wont upgrade my LR5, so ill have both on my pc. Is there anyway of transferring my LR5 catalogs over to LR6. any help would be great thanks.
The first time you launch LR 6, it should find your LR 5 catalog file and ask you if you want to upgrade. You should say yes (or OK or whatever the word in the dialog box is)
If this doesn't happen automatically, then you can open LR 6 and select File->Open Catalog and point to the Lightroom 5 catalog file.
And to expand on the answer above. LR 6 will make a Copy of your LR 5 catalog and convert that copy to work with LR 6. So you will still have your original LR 5 catalog on your system.
Please note that a catalog upgraded to work with LR 6 will not open in older versions of LR