Re: iMac with Lion 10.7.5 - what FCP can I run?

My old G5 kicked the bucket, taking my FCP 4.5 with it. I use an iMac, post 2007 for my life, but have no FCP on it.

So I need to purchase something that can run on it, for editing.

Here are the details:

iMac
20-inch, Mid 2007
2.4 GHz Intel Core 2 Duo
Memory 4 GB 667 MHz DDR2 SDRAM
Graphics ATI Radeon HD 2600 Pro 256 MB
Software Mac OS X Lion 10.7.5 (11G63b)

Is there an older version that I could purchase that could manage the Intel processor? Money is tight, can't afford and not sure I could use the newest full version anyway, and I don't think this iMac is upgradable system-wise to Yosemite, anyway, though I know I can take it up to Maverick -- somehow.

Thanks, for any help.

I do not have the disks -- the computer was loaded many years ago and they're "lost" -- I need to know what to purchase. If I can't run FCP at all, what? Final Cut Studio?

Is my iMac capable of being upgraded to Yosemite? It was my understanding it could only go up as far as Maverick.

Jiminy Christmas! I think ya saved my life! AWESOME!

Thanks, thanks, thanks!