This build requires a 64 bit JVM. It will not run with a 32 bit JVM.
You can for example download Sun 64 bit 1.5 JVM for AMD64. Note that
Sun 1.4.2 JVM for AMD64 is 32 bit and cannot be used to run this build. 

After Eclipse 3.2.2 was declared, a problem was found in SWT's 64-bit GTK libraries that prevented the Browser widget from working.  A fix exists for this problem, and all 64-bit GTK users must install or Eclipse may not start.  See bug 174547 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=174547.  A patched feature is available on the 3.2.x update site under "Eclipse 3.2.2 patches".