Okay, here's what you do, step by step:
Firstly, go into your EverQuest folder and find your EQHost.txt file. Rename that to EQHost.old. Make a new text file in that folder and name it EQHost.txt. Open this new file and enter the following:
[Registration Servers]
{
"register.eqemulator.net:5999"
}
[Login Servers]
{
"eqlogin4.eqemulator.net:5997"
}
Then, you need to go into the directory you installed the WRPatcher in (mine is in C:\WRPatcher) and delete the wrp_sett.txt file.
Once you've done this, run the patcher again. You'll go through the setup phase, the first part of which will ask you to locate your EQ folder. So, use the browse button to find the folder that your legally purchased copy of EverQuest is installed into, and hit okay (mine is C:\EverQuest).
Once that's done, you hit next. It'll ask you if you want to use EQw to log into EverQuest. If you don't, you click the little "No" button, if you do, then click the little "Yes" button. If you click the "Yes" button, you'll be required to enter the location of your EQw executable. Use the browse button to find that folder the same way you found your root EQ folder (mine is in C:\Everquest\eqw235a, for example).
Once you've finished with this section, click next again and read what the patcher is telling you. Keep going until it executes and starts to download the files. Once it downloads the files, you need to hit the "Run" button, which should run EverQuest or EQw (depending on what you've chosen) and you can log in normally from there.
If this doesn't work, reply with every piece of information you can gather. Error numbers, messages, what it's telling you, etc.