Okay mr.j here are a few options for you to try, both should help you with your current page file problem.
First of the best way to get a more stable system is to allow windows to control the page file size, you should only adjusting the size of your page file if you seriously know what you are doing.
Check Control Panel>system>Advanced Tab
performance:>settings>advanced
look at virtual memory: and it should show the size of your current page file. The minimum size is 2MB but the total size of all pagefiles should be at least the size of memory + 11MB.
To change the size or remove and add a page file click on th e>change button.
A list of all partitions and the size of any pagefiles that exist will be listed next to them. To modify the size of an existing pagefile select the drive, e.g. c: and in the "Paging File Size for Selected Drive" enter a new Initial and Maximum size. Click Set when you have changed the values.If you want to add an additional page file, select a drive that does not currently have a pagefile, e.g. d:, enter an initial and maximum and then click Set.

XP gives you the option of not using the pagefile if you have more than 512MB of RAM. To disable the pagefile, perform the following steps:

1. Start the Control Panel System applet (go to Start, Settings,
2. Control Panel, and click System).
3. Select the Advanced tab.
4. Under the Performance section, click Settings.
5. Select the Advanced tab.
6. Under the Virtual Memory section, click Change.
7. Select No Paging File and click Set.
8. Click OK.

However Microsoft has implemented a feature that will clear the page file but they do not have it enabled by default. Please note, this will slightly increase the amount of time it takes to shut down your computer but it is well worth it.

1. Start Regedit
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
3. Select ClearPageFileAtShutdown from the list on the right.
4. Right on it and select Modify.
5. Change the value to 1 to enable.
6. Reboot your computer.

goodluck please use this advice at your own risk and ensure that you always create a restore point before making significant changes to your system