ID Conflicts?

[Kafkakama]

I'm sorry if this kind of topic already exists, I've looked it up on search engones but I've found no kind of post like this... Please direct me to a solved post regarding the same problem if this has been answered.

 

Alright, I've looked it up on google and other places, and I've seen lots of ways to solve these.

 

ID conflicts.

 

Now, while I was making my personal modpack I've run into one so far that says that something already occupies ID slot 3. I can only assume there are tens, if not hundreds more to follow if an ID conflict with a high number like 3 appears.

 

I need the fastest (hopefully also easiest) way to fix all of these conflicts. I know I can go into the config files and such, but... ugh.

 

Apparently you can fix these manually by making NEI do some dumps of availible IDs or something of the sort... but this doesn't seem to be possible, since I can't get into Minecraft anyway because it crashes.

 

Tl;dr: I need a fast and easy way to fix lots of ID conflicts.

 

Thanks in advance.

[Kafkakama]

Never mind, read Luke's guide. Do not reply to this post.