D&D 4E converting Return To The Tomb of Horrors to 4E

[LeStew]

Where would I even begin?

Having NEVER played the module or even 2E for that matter, I realize this is an undertaking for the ages.

Any advice?

 

[Manbearcat]

Where would I even begin?

The same place you'd end. The bottom of a bottle of absinthe.