So about a year ago, the SO finally upgraded her Net connection to DSL, carefully installed the Yahoo! DSL software into her creaky Sony Vaio PC laptop and ran through all the checks and install verifications and appropriate nasty disclaimers. And all seemed to go smoothly and reasonably enough considering it was a Windows PC and therefore nothing was really all that smooth or reasonable or elegant, but whatever. She just wanted to get online. Should be easy as 1-2-3, claimed the Yahoo! guide. Painless as tying your shoe, said the phone company. She got online all right. The DSL...