I'm using MEPIS Linux on my home PC and I've never had a problem with DSL through it. For the record, we have YHTI (Your Hometown Internet), which is somewhat local, being based in nearby Washington, MO. We've always gotten along beautifully with them.
If you're interested, their website is http://www.yhti.net and their phone number is 1-866-670-YHTI (9484). What's more, their DSL is only $18.95/month, and that's for a 1.5 Mbps download, too. Oh, and if you sign up with 'em, tell 'em Fred sent ya (our account and the E-mail for BOTH my wife and I is [EMAIL PROTECTED] -- there's a funny story behind that one! LOL) and I'll get a free month! :-) Fred