WinCE is always a bit tricky.
I have not heard of anyone getting PAC Dipslay running on it.
Also, I think the version of InternetExploer that ships on it is not exactly ‘modern’, so even using it to view pages made with groov might be problematic.
Also, again with WinCE, it might be hard to install Firefox or Chrome on it, but if you could, they should be able to display groov pages.
Lastly, the CPU’s they list are not exactly power houses, so I’m not sure what sort of experience you would get from it.
Hope I did not shatter any dreams… I suggest a bit of a Google and you should be able to turn up a panel PC that would run PAC Display natively. Yes, you might pay a little more, but in the end, having a pure plug and play solution that ‘just works’ and is maintainable, will save you money in the medium to long turn.