How do add your own mods on kovacics mod pack for minecraft?

first you need to dowload the mod you want ( oveusly)

allso you need win-rar or eqivulint ( i recomend win-rar its what i use)

1. go to start and tipe in( in xp go to run then tipe it in.)

2. go to .minecraft ( should be on the top of the list)

3. go to the bin folder

4. then go to mincraft.jar

5. drag and drop all the .class files from the mod and anyother files to there spot.

6. deleat the meta-inf folder ( if its not there then dont worry)