warriorfan808,

The newer v5 Linksys routers are no longer Linux based, last I heard it was VxWorks. You might still be able to find an older version at the store. I know I was fooled by the new version. I went down to the local BestBuy because they had them onsale for $40 after rebates. Got it home and couldn't flash it. This wiki has a ton of info on it WRT54G. If you don't mind looking at the serial number of all the routers in the store, here is a nice list of version numbers and the first 4 characters of their serial number. I also saw a WRT54G on eBay about a week ago that someone had already preloaded Sveasoft's Talisman firmware onto, so that might be somewhere else to look.