"The new router works, lights ok, I access the configuration page, but I keep getting a red internet light - DSL is up, but cannot log into the internet.!
From your above and recent tested statements, you do have some kind of DSL connection, but your Internet PPP is definitely down somehow, i.e. no logical data connection to your ISP data server, and that is why you cannot be recognised and use their internet!
Normally this cause could be:
a) high burst-errors in your DSL connections and hence it is NOT recognised in your logging-In procedures during your ISP's PPP logging-In procedures, (but unless it were permanent, sometimes you may still log-in) or
b) incorrect User Name &/ Passsword given, or
c) your ISP screw up???
d) Incorrect Modem's configurations such as VP, logical data link selection etc. or
e) your PC/laptop Ethernet configurations/connections having problems.
As for your STAT., mostly depending on your line attenuations and errors, which could affect your SNRs (should be around 5-6 dbs typical) and hence your Sync speed with times. However, for a typical <= 50db downstream line-attenuation and 5-6 db SNR, your downstream Sync Speed should be better than 5-6 Mbps!! Just a guess.
Intel E4300 OC with 2GB RAMs,Speedtouch 585 Modem/Router and Windows XP Pro
O2 Standard ADSL2+ Broadband!