Copy the two DLL files manually to <appserver-install>/lib. These files can be downloaded from:
http://download.java.net/javaee5/external/<OS>/aslb/jars/aslb-9.1-MS4-b5.jar |
Where <OS> represents the desired platform, and can be one of the following values:
SunOS
SunOS_X86
Linux
WINNT