iPod after updating to itunes 7 i cant add songs to my ipod

earlier today i seen that itunes needed an update and i was like "yes, an update will be good" boy was i wrong. before i just clicked on my ipod drag and dropped a song and thats it, done. now after updating that doesnt work, i drag and drop the song,it says updating whatever song name at the top but it doesnt actually add it. i deleted some and that works, then i formated it thinking that if i delete everything then i could just drag and drop everything and it would be like before. now when i go into WMP some sync BS comes up which i've no idea what it is. if someone knows how to add songs to my ipod like before or got any ideas of how to do it pls post, i need help desperately thx for reading

where/how do i do that?

i have the 1.2 version and its doing that, i forgot to mention it in my first post

whats that syncing thing do?

i tried that and it syncs some random music and adds it to my ipod, i wanna add the same songs i had before i deleted all of it, not some music that i dont even listen to it