Actually, sorry but I'm not done yet.
Resetted the router, now I can acess the settings, that leaves me with the issue I discribed in the first post, which is for some reason seriously damaging my Ping, DL speed and so on.
I have turned on that UPnP thingie, no luck.
[Edited by ArchDuke, 4/3/2010 6:16:03 PM]
[Edited by Paradox, 4/3/2010 6:20:25 PM]
[Edited by ArchDuke, 4/3/2010 6:29:11 PM]
Google image search speed touch router until you find you model and see if the site displays the number.
Worked for me.
It seemed to fix it's self in about a week, I'd also check the firmware.
[Edited by KiddCold, 4/4/2010 6:45:18 AM]
Here's a site that has guides for lots of popular programs, PC, Xbox and PS3 games customized to your router. Link
There's a crapload of SpeedTouch 510 variations listed under Thomson-Alcatel.