I don't know exactly what's been answered for you konichiwa, but basically, the answer to both of your quesions is a big, fat NO.
The HMO is not available for DirecTiVo's, and there has been no announcement, or rumor for that matter, about it being added. However, the DirecTiVo community is in an uprising for it, so I personally think it'll be a matter of time before it's an option.
As for connecting to your LAN, I have absolutely no ethernet port on the back of my Hughes SD-DVR40. Sorry.
But with that said, I can whole heartedly recommend DirecTV and the TiVo over digital cable. Just switched over myself a couple weeks ago.
My links for you a great deal, my friend. If you want a GREAT deal,
Value Electronics is the way to go. $39.99 for up to a 3-room system with TiVo, and add an additional $20 for the oval, multi-sat dish. Warning, though, shipping is $30. My success story with them: Basically, they messed up one one part of the order, and the fella I was talking to gave me the oval dish for free.

I saved $20, as I needed this dish for locals (coming in April) anyhow. Their customer service is GREAT, and I can't speak enough about them. They also have a toll-free number to order or answer any questions you have.
And with that said as well, I suggest you check out
Tivo Community. Inside is a section for DirecTiVo customers, and LOTS of great info is to be found there. Also, the owner of Value Electronics also lurks there, and has corresponded with me through a couple of PMs. Very personable guy.
If you have any more questions, I'll be happy to answer what I can

. Maybe you'll want a pic of my TiVo unit? ;P
