Now, it seems your complaining that the patcher will not install, AND that you can't save the patcher-installer your trying to download.... These aren't common errors and sugest that you have something going wrong at the OS level.
You have to be specific, name files, list errors as they apear, list paths. Remember we can't see your screen, and have no way to tell if your on a totally different page than the rest of us.
Also I've seen it said many times that people have DOWNLOADED mdac_ytp.exe But they never say they actually RAN the file to install it. Make sure you ran mdac_typ.exe
First reboot your computer so you start out fresh.
If the patcher is installed, try running it. Unless everything worked fine, STOP and report what happened.
Otherwise try playing EQEmu. If anything goes wrong, STOP and report what happened.
Continue like that till you get it working. This is also a lot easier, and faster if you ask for help on IRC. Both sides get fast feedback and clarification that way.
Also it helps a LOT if problems are kept to 1 post so they are easier to track what happend. Don't start more posts.