As a kid I played AD&D (before seeing the error of my ways
) and I had a good time with the series Against the Giants, Decent Into the Depths of the Earth, Vault of the Drow, and Queen of the Demonweb. About a year ago I worked those old modules (extremely toned down) into my Harn campaign.
Noron and his sons had taken to raiding some of the outlying Kaldoric settlemets for some unknown reason. The players were to find out why he would do such a thing after remaining virtually neutral for as long as anyone could remember. If any of you have played the old modules, you will see where this is going. Noron was being coerced by the Dark Elves (which was a nice way to bring in The Heart that Broods article) who were plotting (as always) to bring humanity to its ruin.
My players included a Sindarin weaponcrafter/shek-pvar, to whom I gave a familial link to Gwydrial (sp)? This allowed for some interesting play as he found out more about what was going on, while trying to conceal the old Sindarin rift and distance himself from his great, great, great....., cousin. Eventually I had most of the party thinking that he was a mole, sent to distroy them. It was great.