Linksys Wireless Router :: Wrt310n V2 Repeatedly Drops Wifi?

I have a WRT310N V2 wireless router, with a WMP600N dual-band PCI card in my computer, using Vista 64x.  I have had the same set-up for the past year or so, even after moving to a new apt, which I have been in now for 3 months.  It has worked perfectly, up till recently. Over the past week however, my router has been dropping the connection, to the point of having to wait for it to show back up in my connections list.  I made no changes to my setup, prior to the problems.  I am kind of doubting it's my wireless card, as I can still see other routers.  I have tried changing the MTU size, the Threshold, made sure the firmware was up to date, etc.  I re-installed the drivers for my NIC and even changed ports, just to be on the safe side.  I don't know what else to do, except go out and get another router.  I have to use wireless, as I have nowhere to run cables at.  I had this problem before with a Linksys wireless router, but figured it was due to the extreme amount of bandwidth my game uses online.  Ironically, both routers are doing the same thing.  They hit lag every 60 seconds almost on the money.  I'm a gamer, so this is a huge inconvenience for me.