WebDAV Jigsaw: /tmp Required???

Is there some way to set the "/tmp" directory which the CVS uses in WebDAV Jigsaw?  Currently, if we do not create a "/tmp" directory on the drive in which we installed WebDAV Jigsaw putResources fail as follows:

D:\QNami\Jigsaw\Jigsaw\bin\cvs_wrapper.exe -directory D:\QNami\Jigsaw\Jigsaw\WWW\MQSoftware\BTM\Profiles D:\QNami\cvs.exe -q -d :local:D:\QNami\cvsroot status -l
... with a cvs status equals to : Up to date
org.w3c.cvs.CvsRunner[temporaryFile]: unable to create/use temporary file: d:\tmp\cvs-1054662640671-30

We have tried setting the environmental variables that CVS usually uses; TMP and TMPDIR, but WebDAV Jigsaw's CVS does not appear to be using these variables.

Thanks,
Brett