if you can see the title in the single-player replays page a replay-file with the same name (+.spr file extension) has been saved to YOUR_LFS_FOLDER\data\spr on your harddisk.
The next step is to login (with your username, not as guest) at lfsworld.net. Then click the Icon saying "S2 Hotlaps" and in the appearing window change the tab to "Hotlap charts".
On the right you will find a button to "Browse" your hd for the spr file (same location I wrote above), then just hit "Upload". If it's a valid hotlap a new window should appear stating that it was added to the hotlap-chart.
First of all, your specific wheel and the pedals "should" be working in LFS, as many players are using it.
In LFS, take a look under Options->Controls->wheel / js (at the top of the screen)-> Axes / FF (next to Button 1 and Button 2 in the middle of the screen). Can you tell us if you see green bars moving on the right while pushing the pedals? You then can assign any from the "available axes" to any function LFS provides: steering, throttle ,handbrake, etc.
you need to save the .spr file in: Your_LFS_Dir\data\spr. Then in LFS just click on Replays in the main menu. A switch will appear in the upper left corner of your screen that lets you toggle between multiplayer-replays = .mpr and single player-replays = .spr. Now just pick the .spr you want to watch from the list on the right. If you downloaded the hotlap from lfsword.net the file will be named in the following format: DriverName_TrackConfig(abbr.)_Car(abbr.)_Laptime.
there are a few threads about the configuration of a Logitech Driving Force Pro wheel (abbr. DFP) on this forum. I've found the following post by BWX232 to be very helpful: http://www.lfsforum.net/showpost.php?p=886&postcount=4
if you have to ban someone ( ) you have to use their lfs-world nickname. Open the connection list (press n until it is visible) and hold CTRL+SHIFT to get their lfs-account names.
you can assign (by typing) a proper value by using "right-click" on the slider first. Works for (m)any settings in LFS.
As for the sensitivity, have you turned your wheel from lock to lock after changing any settings? You can also change the wheel turn compensation to higher values (it should be less sensitive around the center afterwards).