Hey thanks! I can't remember the version I have.. it's a 4 something, if I want to upgrade to the newest one, how do I know how much it will cost? I'm so lost on where to look
You can download and install any verison of LR 4 (the latest is LR 4.4.1) but you will need your Lightroom 4 serial number to use it beyond 30 days.
You can purchase an upgrade to LR 6 from Products, scroll down to LR 6, click on Buy, change "Full" to "Upgrade", which costs 79 US Dollars (again you will need your LR 4 serial number).