Ok, i saw some other posts about this sort of thing, but not exactly related.
This is not what I want to do, but need to do unfortunately. 

We have in this order right now  

Prototype 1.6  

jQuery 1.2.6 with noConflict on jQuery with j 

I need to add jQuery 1.4.2 in that mix as well. It will always be the last one loaded. No option. 

Is there anyway i can do this currently? 

I know this is not good, yada, yada, but it has to be done for now unfortunately.