I need to get Sage Pay working
I've got Powerstore3 and now I've got eCart5 as I was told this was what I needed to change my payment gateway to SagePay in PS3. But now from reading on the forums it looks like this isn't as easy as it should be.
I don't mind losing some of the functionality of PS3 as long as people can buy things! I'm not a coder but I don't mind having to go into the code and change it manually. But I do need to know exactly what I have to change.
Is there a step by step guide to this? Can some instructions be put together?