Rooting Micromax A87

Here are the steps :-

1. Download these files :-

jdk 32bit only from here
Android sdk from here
Unlock root from here
A87 drivers from here
adb_usb.ini (very imp) from here 
2. Installing Android sdk

Install jdk (required for Android sdk)
Then install Android  sdk, if you get an error saying "Java SE development kit not found" then follow the steps below,
Press back and then Next again (works most of the times).
If it still shows the same error then you may have to set the path, Just goto control panel > search for "advance system settings" > open it > click "Environment variables" there you may find a variable named "JAVA_HOME" select it and click edit, if you dont find it then click new, in the variable name type "JAVA_HOME" and in variable value give the Path of your jdk installed for eg. ("C:\Program Files(x86)\Java\jdk1.7.0_07"). be sure that u specify you own version of jdk, just go and check your folders. now Click OK > Click OK > Click OK then try installing android sdk.
If you still get the same error, just check that the version of jdk you have installed and the version of Android sdk you are trying to install are both x86 / 32bit versions, if not then download again.
After installing open sdk manager form start, you will get a list of packages to install just select "android sdk platform-tools" and "google usb driver" unselect the rest, click install packages
After installing copy the adb_usb.ini file in "C:\Users\(your PC name)\.android" folder
3. Enable usb debugging mode

On your A87 goto settings>applications>development>enable usb debugging 
connect usb cable, it should say usb debugging mode and show a little green android icon on the top left (if not then reinsert cable or re enable usb debugging)
4. Installing A87 drivers

Windows will detect the device, let it stabilize then extract A87 drivers to a location say "C:/drivers".
Now goto start type "device manger" open device manager, you will find "android adb interface" right click upgrade drivers and lead it to a location of your extracted drivers.
do the same with other devices you get with an exclamation icon. (dont worry if you dont find other devices, its fine)
5. Root it

 Unlock root, open it and click root, it wil ask for the device select micromax A87 and Your done !!!