I know the pills you are describing. I have IV'd them before.
I can't recommend IVing them because shooting any pill is inherently unsafe. If you must, I did the following, taken from Heroin Helper, with the added step of Micron Filtering:
1 Scrape off the coating
2 Place uncrushed pill in spoon/cooker.
3 Add 1 & 1/2 mL of water
4 Being heating.
5 When the sides of the pill begin to melt, stop heating and crush pill. It should crush up very easily.
6 If you continue heating, you will notice a large amount of wax rises to the surface. You can scrape this off to the side using the back end of the rig.
7 Now, I will draw up into an extra syringe (3 mL) with a detachable needle. I then micron filter the solution at least twice.
8 I then draw the solution up into the rig (cotton filtered), tie off and bang.
Only did it a few times and again, I must advise against banging pills because of the dangers involved.
But if you're going to do it, please don't use salt.