I downloaded QEMM from a site and installed it...if I remember correctly it DID allow me access to the UMB high memory area. It was quite strange seeing the right side filled with numbers besides 0 when I typed in mem /c
Anyways, if you still need it I can try and find the site again. On a side note, i'm looking for MS-DOS 6.x...do you know where I can get it? Seems silly that microsoft isn't offering it as a download.