DNS? Issues with Axim X51v

FYI -- I've already posted in the Axim group, but y'all seem to be much more active here  :-)

My wired networking skills are adequate for basic stuff, but I'm a real novice when it comes to wireless.

I have a wired network with a Linksys RV082 router & Linksys EZXS88W 8-port switch.  Due to some unique video needs, I'm using static IP addressing for the network.  I finally recently added a wireless access point (Linksys WAP4400N) when we added two wireless laptops to our fleet.  Everything was working fine . . . until I tried to get a Dell Axim X51v going, and that's where my trouble is.

I'm able to wirelessly connect the Axim to the network (I can open the router's set up page), but when I try to get on the Web (or send/receive email) with the Axim, I get "The page cannot be found. Check the name and try again" error message no matter which common sites I try to access.

To a user in the Axim forum, DELL-Jimmy_P said that if one can access the router and also access a numeric (not sure if that's the correct terminology) Web addy (the example he used was http://143.166.83.38/) then the problem is with the DNS settings.  Sure enough, I can access my router and I was able to access the Web page example he provided, so I guess I've got DNS issues  :-(

Unfortunately, I wasn't able to find any further information there.  I've double-, triple-, and quadruple-checked the IP addy, Subnet mask, and default gateway in the Dell Azim X51 WLAN Wireless Adapter page, and they are all correct.

What am I missing here?  The other wireless devices are still working fine with the same settings . . .

TIA for any suggestions -- I'm completely stumped here & getting more gray hair by the second!