Originally Posted by michaeltscott
If the TiVo HD can has an RJ45 jack for a wired connection, it can be connected to the type of wireless adapter that I've used in the past. There is no way that it can possibly tell the difference.
100% correct. In fact, it's precisely how I have my S3 connected to my network at home. My S3 is wired to a Linksys WRT54Gv3 running the 3rd party firmware Tomato in WET (also known as "client bridge") mode. Works like a charm. My TTG transfers approach 12Mbps.
I've also set up my brother-in-law's S2 in a similar manner, with similar success.
I prefer this method, since as you say, the TiVo doesn't need to know what it's connected to. As far as it's concerned, it's directly connected via wired ethernet to the network.