SAXON - extensions dont work (classpath is set i think)

hi,

i just tried to use the adjustColumnWidths - Extension.
should be easy: add saxon651.jar to classpath, thats all.

but i always get this errormessage:

C:\FEY\sax65>java -cp c:\fey\saxon651.jar -jar saxon.jar -o out\tableex.htm
C:\FEY\docbook\docbook-xsl\docs\tableex.xml
C:\FEY\docbook\docbook-xsl\html\docbook.xsl
No adjustColumnWidths function available.
Processing terminated by xsl:message at line 404

unforunately its not very detailed, so i dont know if saxon finds the .jar
at all...

same with this classpath:

C:\FEY\sax65>echo %classpath%
C:\FEY\saxon651.jar;C:\FEY\sax65\saxon.jar;
C:\FEY\sax65>java -cp %CLASSPATH% -jar saxon.jar ...

im a newbe to java so most likely i did something wrong, but i cant imagine
what...
im using java 1.4.0_02, w2k sp3


i lost hope :/ plz help

thx
-seb