You may need something like [link|http://www.devtech.com/DeskMan/|DeskMan/2].

Here's what my version 1.51 of DeskMan/2 says about PerfOpen.cmd:

/* REXX OS/2 - PerfOPEN.CMD Open a view of an object */
/*-──────────────────────────────────────────────────────────────────┐
│ │
│ (C) Copyright 1993-1994 Development Technologies, Inc. │
│ Portions Copyright 1993 Gregory Czaja │
│ All rights reserved │
│ DeskMan, DeskMan/2, DM2Setup, VUEMan, VUEMan/2 and DM2Image │
│ are trademarks of Development Technologies, Inc. (DevTech), │
│ a Pennsylvania Corporation │
│ │
│ version 1.51 April 1994 │
└───────────────────────────────────────────────────────────────────*/
/*───────────────────────────────────────────────────────────────────┐
│ Performs a wpOpen function on the specified object │
│ located in the FolderName-folder │
│ Note: a variation of the PerfSET.CMD │
│ │
│ The folder and object names should be surrounded by " │
│ if containing blanks. │
│ │
│ The format is: │
│ PerformSetup=objectName,FolderName,OPEN=View │
│ │
│ objectName can be: . object title │
│ . object ID │
│ . fully qualified path │
│ │
│ note: if an object ID (i.e., a character string enclosed │
│ in brackets <>) is used as the object name, the │
│ object's location specified as FolderName will be │
│ IGNORED! - but needs to be specified. │
│ │
│ FolderName can be: . folder title │
│ . object ID │
│ . fully qualified path │
│ . ANYWHERE │
│ note: if ANYWHERE is specified as the object's location, │
│ the entire Desktop will be searched for the object │
│ specified (top-down). First object found will be │
│ used. │
│ │
│ View can be: . DEFAULT - the default view of an │
│ object will be opened, simulates │
│ a double-click on an object │
│ . DETAILS (folder only) - the Details │
│ view will be opened │
│ . ICON (folder only) - the Icon view │
│ will be opened │
│ . TREE (folder only) - the Tree view │
│ will be opened │
│ . SETTINGS - the Settings will be │
│ opened │
│ │
└───────────────────────────────────────────────────────────────────*/

Presumably if the object it setup properly, this will work correctly for you.

Warning though, I haven't used DM/2 in several years.

HTH.

Cheers,
Scott.
(Sorry about the formatting...)