Default Parallels HDD Location

I been reading quite a few of the postings and it seems that the HDD file is located in several locations for various people. Mine happens to be in HD/Users/KMW/Library/Parallels and is actually called winxp.pvm which evidently is the what they are calling what used to be called winxp.hdd on my PD3 installation. (I think?)

Are most people's the same?

I am bringin this up as I was wondering if some of the failed installations and problems with other issues might be associated to where PD 4 installs vs. where it expects to find things?