Step 1: Create a shortcut for eclipse.exc
Step 2: Right click eclipse short cut and add target value with “-vm "C:\Program Files\Java\jre1.5.0_08\bin\javaw.exe" -vmargs -Xmx1024M -XX:MaxPermSize=512M”
Like “D:\eclipse.exe -vm "C:\Program Files\Java\jre1.5.0_08\bin\javaw.exe" -vmargs -Xmx1024M -XX:MaxPermSize=512M”

Step3 : start eclipse by clicking on the short cut created.