Need Help Making an Alias for a Java Plugin

Hi There,

I am running Ubuntu 7.04 on an IBM Thinkpad T41. I need to make an
alias for the Java plugin UnwarpJ.

I follow the instructions here (http://bigwww.epfl.ch/thevenaz/
UnwarpJ/) and get errors. The output is below. I'm new to Java and
plugins. How do I change the input to the alias command to get a
proper alias to the UnwarpJ program?

Thanks in advance!
Matt

mdj@lapmdj:~/downloads/ImageJ/plugins/UnwarpJ$ echo $IJDIR
/home/mdj/downloads/ImageJ
mdj@lapmdj:~/downloads/ImageJ/plugins/UnwarpJ$ alias UnwarpJ 'java -
Xmx512m -Dplugins.dir=$IJDIR/plugins -cp $IJDIR/ImageJ.app/Contents/
Resources/Java/ij.jar:$IJDIR/plugins/UnwarpJ UnwarpJ_'
bash: alias: UnwarpJ: not found
bash: alias: `java -Xmx512m -Dplugins.dir': invalid alias name
mdj@lapmdj:~/downloads/ImageJ/plugins/UnwarpJ$

The directory where the UnwarpJ plugin is stored looks like this:
mdj@lapmdj:~/downloads/ImageJ/plugins/UnwarpJ$ ls
UnwarpJ_.class unwarpJDialog$9.class
unwarpJClearAll.class unwarpJDialog.class
unwarpJCredits$1.class unwarpJFile.class
unwarpJCredits.class unwarpJFinalAction.class
unwarpJCumulativeQueue.class unwarpJImageModel.class
unwarpJDialog$10.class UnwarpJ_.java
unwarpJDialog$11.class UnwarpJ_.java.backup
unwarpJDialog$1.class unwarpJMask.class
unwarpJDialog$2.class unwarpJMathTools.class
unwarpJDialog$3.class unwarpJMiscTools.class
unwarpJDialog$4.class unwarpJPointAction.class
unwarpJDialog$5.class unwarpJPointHandler.class
unwarpJDialog$6.class unwarpJPointToolbar.class
unwarpJDialog$7.class unwarpJProgressBar.class
unwarpJDialog$8.class unwarpJTransformation.class
mdj@lapmdj:~/downloads/ImageJ/plugins/UnwarpJ$

.