Yeah, the truth is as fairnymph said - it's not a healthy practice to inject pharmacutical pills .. HOWEVER, it's something many of us do and the once-and-awhile use will NOT kill you, and is, in fact, very common ... here is the problem - if you're talking about the "blue 100mg morphine pills" it sounds like you have the extended release tablets - these, like OxyContin, should NOT be injected unless you know what you're doing (it can easily be done at home using a freezer and some water) ..
So, if you have an instant release tablet, simply prep it for injection as you would most any powder - the biggest thing is that you avoid using heat, as by cooking it you may end up breaking down shit that it's best to avoid ..
Still confused? Ok, if those pills are INASTANT RELEASE then simply crush tme to a powder, put them in a spoon, add cold water, mix as best you can, let set for awhile, mix again, FILTER then inject .. if it's extended/controlled release stick to shorting these, as you CAN inject but you need to do a complete cold water prep in the freezer..
So, research those a little more ..
As a side note: Demerol and Dilaudid are NOT ment to be injected, and you get many of the same substances (people think Dilaudid is MENT for injection because of how easy it disolves, though it still contains Talc which is one of those not-good-things to bang, though with Dilaudid the ONLY WAY to get your moneies worth is to inject it!)