I know. I've used various HTC slider keyboard devices over the past 2 years (switched after I sold my N90. Sad day ) And I don't miss the keyboard at all. The Nokia T9 works very well and it plenty good for me.
And if you mean the T-mobile @ home wifi thing, It's only supported on exclusively T-mobile @ home phones
Edit: at least that I've heard. I dunno if those guys at HoFo have figured out some hack now or not