Just guessing here, as I've only used the free version.
It should run on less than 2 Gigs, though. But I wouldn't think accessing the properties would hang due to not having 2 Gigs, but 512Mb is definately not enough to run it reliably.I'd upgrade the memory first and see if it fixes the issue.
It could also be a video issue. If you buy a new laptop, I'd recommend a workstation laptop with an onboard workstation video card, like Dell's precision series.