waitqueues 2.2->2.4

Again, I"m working on converting a module from 2.2 to being compatible with 2.4.
In the 2.2 version it uses wait_queue structs with function calls such as wake_up(), interruptible_sleep_on()...
In 2.4 these have changed to accept wait_queue_head_t's. What is the correct way to convert to the new way of doing things?

And on another note, what is the best way to debug a module that crashes in an interrupt routine? (the oops info doesn't get logged anywhere since it crashes in the ISR).

* Please CC to me since I'm not subscribed...

Thanks,
--James Lamanna