It looks like somebody has been tampering with your Paging File settings ,but it still looks like it should work okay for the moment.
Is there nothing under Page File Space? Something like:
Page File Space 5.22 GB
Page File C:\pagefile.sys
To be sure that there is not a problem creating files in the minidump folder, see if you can use something like Notepad or WordPad to create a simple text file (something like test.txt) and successfully save the file in this folder:
c:\windows\minidump
If the folder does not exist, create it - even though XP should create it on a crash if it needs to.
If you are getting anything to do with ...00024 errors, you should run a chkdsk with error correction (chkdsk /r) from the XP Recovery Console or from a Hiren's boot CD to be sure your NT File System (NTFS) is not afflicted. If it is afflicted, that could be a reason files can't be created/saved in the minidump folder.