Program too big to fit in memory

Hello!

I try to install a develop_frame_work for Java3D, an it is not big on the disk, but I only get this:

D:\Downloads\Java 3D>java3d-1_3_1-windows-i586-opengl-sdk.exe
Program too big to fit in memory

D:\DOWNLO~1\JAVA3D~1>

I got 128 Mb Ram, but in the Windows Task Manager it says:
Total 188752
Limit 309952

I do not have any big programs running when trying this so if any one could help me I would be most thankfull.

Best regards.

Fredrik