Hybrid Sleep is a new feature in vista. It simply does S3 (Suspend to RAM) and S4 (Suspend to Disc) at the same time so even if the power goes out the PC can resume.
So as I said check in your bios whether S3 and wake on LAN are enabled. They are both in Power Management Setup. Then try standby (it called sleep in vista) in Windows see if it does right like in your posted article. Do the USB keyboard/mouse trick if needed like instructed in the article (I don't know about this as I don't use USB kb/mouse).
After that follow the guide until here
. This is a little tricky as the author of the guy assume every network card is the same as his, actually they are different. But just search for something has this *wake* or this *WOL*:wink: . With my Realtek onboard LAN, they're Shut down wake on lan and Sleep WOL Power Saving. Then follow the rest of the guide.
One thing important that I forget to mention is you should have latest driver for your MB chipset and LAN chip.
Hope it helps and if you follow closely and still can't do it then I can't do anything more as this is as detail as it is and I don't know any more tricks.