Sorted thanks to NRT who supplied me with a great iGO8. Also thanks to chas521 for sticking with it.

I know this is a old post...but i came across this solution while looking for something else. So maybe this answer the question for others looking for it. I am a newby..so check out yourself : Advantech Memory Adjust Solution
The Windows CE default setting for Storage Memory and
Program Memory ratio is fixed. Even though you can change
the memory setting during runtime; this setting will revert
to default after resetting the system. Because x86 platform
does not have battery to backup the setting in DRAM, also
this setting is not kept in the registry, you will have to
rebuild your Windows CE OS image if you want to fix the
memory setting by default.
Advantech has developed the solution and integrated into
the pre-configured Windows CE Image. You only have to
follow the procedure to change the setting.
1. Go to Control Panel > System
2. Click “Memory”
3. Move slider to the left for more memory to run programs,
move slider to the right for more storage room.
4. Advantech’s background service will automatically
keep the setting, and use the setting when you
reboot the system.

Look for a small exe and it's accompanying ini file called SetSystemMemoryDivisionKB.exe

This does the same job without needing a background service.