Memory issue with Vista

[Phillip...@familynet-international.net]

I am running some real dos applications dated back from 1990 and its
running under vista. The machine has 4 gb of memory and the application
is running under a msdos window.

The problem is that when it tries to shell out I am having a issue
with the machine running out of memory. I already tried to adjust the
memory settings in the pif file and that did not resolve the issue.

There are no statements included in the autoexec.bat and the only
statement in the config.sys is files=40.

I need to increase the available memory in the dos screen.

Conventional Memory :

Name Size in Decimal Size in Hex
------------- --------------------- -------------
MSDOS 12592 ( 12.3K) 3130
KBD 3360 ( 3.3K) D20
HIMEM 1248 ( 1.2K) 4E0
MOUSE 12528 ( 12.2K) 30F0
COMMAND 4112 ( 4.0K) 1010
PCBOARD 35792 ( 35.0K) 8BD0
MSCDEXNT 352 ( 0.3K) 160
REDIR 2176 ( 2.1K) 880
DOSX 34832 ( 34.0K) 8810
COMMAND 5376 ( 5.3K) 1500
FREE 112 ( 0.1K) 70
FREE 542528 (529.8K) 84740

Total FREE : 542640 (529.9K)

Total bytes available to programs : 542640 (529.9K)
Largest executable program size : 541104 (528.4K)

2097152 bytes total contiguous extended memory
0 bytes available contiguous extended memory
528384 bytes available XMS memory
MS-DOS resident in High Memory Area
* Origin: bbs.cyberchatnet.com 23 (8:8/703)