Printer (Driver) issue only after reinstalling 10.6.8

Question

For some reason since I reinstalled my mac os (I transferred everything from time machine and did the updates, including a printer driver update) after my printer has been idle, it can't be found by my computer.  In theory there's nothing wrong with my wireless router, as everything possible with that has been tried and failed to resolve the issue.  When I go into the console logs, I get these errors, always together, every ten seconds or so: 
9/12/11 5:27:05 PM          com.apple.launchd.peruser.501[92]          (com.hp.devicemonitor[2063]) posix_spawn("/Library/Printers/hp/hpio/HP Device Monitor.app/Contents/MacOS/HP Device Monitor", ...): No such file or directory
9/12/11 5:27:05 PM          com.apple.launchd.peruser.501[92]          (com.hp.devicemonitor[2063]) Exited with exit code: 1
9/12/11 5:27:05 PM          com.apple.launchd.peruser.501[92]          (com.hp.devicemonitor) Throttling respawn: Will start in 10 seconds
If I put my computer to sleep with a print job in the que, when the computer wakes up it will connect, but will then stop immediately after that transfer, where if I try to print something, it says the printer is offline and can't find the printer.  The same is true with the connecting if I turn off the printer and turn it back on - whatever's in the que will print.  But once it goes idle for more than a few seconds, I'm screwed.  I'm at my wits end with this.  I've called Belkin (maker of my router), HP, maker of my printer (it's an HP CP1525NW that's having the issue), etc. and no resolution.  Also, when my computer tells me that it can't find the printer, it has no trouble connecting to the internet as I can find the printer if I open it's IP address in safari or firefox, and play on farmtown in FB all I want, but the print que/utility will NOT find the printer.  Please help me.  Thank you in advance if your advice is helpful/almost helpful. 
Another thing I found was this in my console:  9/12/11 10:58:50 AM          mDNSResponder[18]          Client application bug: DNSServiceResolve(HP\032LaserJet\032CP1525nw\032(843086)._ipp._tcp.local.) active for over two minutes. This places considerable burden on the network.
I'm confused as to whether this means anything.  The HP laserjet cp1525nw (843086) is what my computer calls my printer when it's wireless; the wired (usb) one doesn't have the (843086) after it. 
And one other thing - if I search this very same error on google, the only thing that will come up is someone having trouble with a brand new MBP with the screen flickering and the graphics device switching.  For whatever reason when the person got rid of HP from their user logs or something the flicker issue went away but they started seeing this very same series of errors.  My screen is fine except for the fact that sometimes when it comes out of sleep the screen will go black.  I've had that problem for a long time, it doesn't happen very often (thank God), and while this has been going on (before the reinstall), I had NO trouble with my printer.  Nothing seems to make sense.   

Answer 1

One other thing I forgot to mention.  If I hook the printer up using a usb cable, it prints fine without issues.