Eaaaasy all,
Right here's some useful tutorials for bass synthesis, originally for DnB but can be applied to any genre, found it opened up windows of creativity regarding how specific sounds were made...

http://www.dogsonacid.com/showthread.php?threadid=337721&highlight=bass+tutorial

^Translated version is down on that page ;)^

The next one is pretty advanced as there's no explaining, just the recording... but i found it useful so hopefully someone else will it's a video clip of the guy making a bassline...

 Forum thread:

 http://www.dogsonacid.com/showthread.php?s=5799af4e398bf0e426fa30134a0e7fc5&threadid=537544&perpage=20&highlight=spinlock&pagenumber=1

Video:

http://www.mediafire.com/?71xdhqtnymn

Aaaanyway, i think i can help if anyone gets stuck with it... think it's important to move beyond preset synths.... especially FL Presets cause they're so obviously FL makes me cringe... XD

Hey, why dont you rewrite that thing.  I would love to follow it but I cant make out what the hell is being said. Even after translating the page its vague to me.  I know you could do a better job!!!  Come on, man!!!

I'll try when i get back to england,

I am seriously looking forward to it!