This problem no longer exists. I'm only seeking thoughts/wisdom. Thanks for reading if you choose to proceed.
It's been months since my change from DHCP to all-static in my house and I can honestly say that I'm absolutely convinced every network connectivity problem I've previously had while I was set up for DHCP was because of my Linksys router's DHCP. I've had Wi-Fi enabled the whole time: before and after. My brother's Wii gets net only from the wireless. It doesn't seem to make a difference.
The problem I used to have is that I would lose Internet once in a while at pretty close to the same time. Sometimes it would be 1am-2am. Others it might be 7pm. It seems to me that it revolves around about a 6 hour time frame. I notice that the DHCP on the router is set for 6 hour lease by default. Oh, and when it went out, it was out for good. It might have happened for an hour. Back then, I wasn't so educated with computer technology, but I did know how to test if I actually[/] had internet by just plugging directly into the modem - and it would give me net. I plug into the router once again and nope... nothing.
Does this seem to make sense or am I not making any sense? I can only go from my recollection since I never have the problem anymore. I also don't have that router anymore, but it was also a $40-or-so Linksys.
I also want to mention that, back then, I followed the procedure at the beginning of this thread and it didn't always work.
I realize that it probably can't be narrowed down to 1 final conclusion and I can't really give any more information than what I've given here, but I'm just looking for thoughts. So... thoughts?