Forms :: Developer 9i AS Icons Disappear At Runtime?

I develop a form using Devloper9i AS, oracle 9i, Winxp. The problem is: I used icon button at design view ".fmb" but at run time this icon disappears in the file ".fmx" After reading some topics covered this problem in this forum; The following steps are executed:

1-In regedit I put UI_ICON = c:icon --where my gif icon file is located

2-At command prompts i type: C:>jar -cvf icons.jar c:icons Then "ICONS.JAR" file is created on D:Dev9ijdkin

3- I Copy the file "ICONS.JAR" and past into D:Dev9iforms90java

4- I modify the "FORMSWEB.CFG" as follow:

archive_jini=icons.jar,f90all_jinit.jar;
imageBase=codeBase

4- In "Registry.dat" I added the flowing line:

default.icons.iconpath= c:icons

5- I modify the "orion-web.xml" .as follow:

<virtual-directory virtual-path="/html"
real-path="D:Dev9i/tools/web90/html" />
is modified to :
<virtual-directory virtual-path="/ICONS"
real-path="C:ICONS" />

6- In the property palette for the icon item and in the Icon Filename I put just the icon name called "w_prev" Without any extension , any path...