I think as long as that memory leaking driver is running that no matter how big you make your page file, it will eventually fill up. The page file size you had (50-250) is plenty big as long as your programs/drivers are correctly releasing memory... which one of yours has been determined not to do.
One hopeful point though, by increasing your pagefile to this current size... maybe now you'll get your other bsod before the pagefile runs out of space. Still waiting on that bsod to identify the bad driver... get that fixed and you'll be able to reset your page file back to where you want it.
Yeah, leave it like you have it for now. Keep an eye on it though... open explorer once in a while and see how big it's getting. The name of your page file is 'pagefile.sys.' It's a hidden system file located in your root directory.
The ammount of ram you have on your system has nothing to do with the size of your pagefile, since the pagefile is a file it has to do with the ammount of Hard Drive space you have, you are telling your system to convert certain ammount of Hard Drive space to memory.
I retract what I posted previosly, by you posting 1024 MB of ram on your system means that the recommendation would be some where between 1300 MB to 1500 MB size of your page file which I think it would be a good amount of wasted disk space.
Here is Microsofts recommendation:
A pagefile that's set too small can lead to overactive disk swapping, or "disk thrashing." The only real drawback with a relatively large swapfile is that you might not have as much disk space available for other uses as you would if you'd followed the pagefile setup recommendations. The formula suggests you start with "amount of RAM + 12 MB." In your case, that comes to 76 MB.
To figure out if that's realistic, you'll want to monitor the actual usage of the swapfile over several days. To monitor disk activity using Performance Monitor, execute the "diskperf" command while logged on as a member of the Administrators group. Then watch the "pagefile usage peak" object over several days of typical server use. It would be smart to set the update interval in Performance Monitor to something like 20 or 30 minutes to reduce the impact on your system. You'll find everything you need to know in this KB article—Q102020: How to Monitor Disk Performance with Performance Monitor.
Monitor for a few days to determine your baseline usage. If the usage is, say, below 76 MB, then you'll probably want to set the swapfile Initial Size at 76 MB and the Maximum size at about 100 MB. If the pagefile usage peak is greater than 76 MB, consider setting the Initial Size to that maximum value + 10% and the Maximum Size to something like 140% the Initial size.