Thank you to everyone who has responded... I am still trying to work the issue (with my limited understanding of technology)
I am finding that just navigating myself around the kitchen (?)

is a bit overwhelming for me... just the volume of postings, even using the search option! I have found the MS Compact Framework source, but I am now trying to navigate through all of the postings on this website to narrow down exactly how to download the software and get it over to my 6700, (i.e., do I load it to a storage card while connected to my pc and then put it in my 6700 to open... also, trying to understand all of the information about bootloader, flashing, those sorts of things).
For the posts regarding the router, mine (a Linksys WRT54G) is set up to "Mixed," but the location for changing it to "B" has managed to elude me so far.
Sooner or later, I'll get it figured out

-- I'm just trusting I won't make things worse before I make them better!
Thank you again.