When I move my mouse slowly over the desktop the pointer jumps often a few pixels (one or two) in the opposite direction of which I move my mouse. Horribly when trying to set the cursor around some semicolons in eclipse. I guess this is the result of a wrong set resolution of it. I suppose this is because the mouse was set initially really fast and even if I do xset 1/2 3, the mouse is just to fast and unprecise for me.

It aready tried to configure the xorg.conf like this:

Section "InputDevice"
    Identifier  "Configured Mouse"
    Driver      "mouse"
    Option      "Device"    "/dev/mouse"
    Option      "Protocol"  "Auto"
    Option      "Name" "Logitech G3"
    Option      "Resolution" "2000"
EndSection

But with no effect. Maybe because there is no /dev/mouse. This ist the content of dev. Maybe you can tell me which one is the mouse.

autofs
block
bsg
btrfs-control
bus
cdrom
cdrw
char
console
core
cpu
cpu_dma_latency
disk
dvd
dvdrw
fd
fd0
full
fuse
fw0
hidraw0
hidraw1
hpet
input
kmsg
log
loop0
loop1
loop2
loop3
loop4
loop5
loop6
loop7
loop-control
MAKEDEV
mapper
mcelog
mem
net
network_latency
network_throughput
null
nvidia0
nvidiactl
oldmem
port
ppp
printer
psaux
ptmx
pts
random
rfkill
root
rtc
rtc0
sda
sda1
sda2
sda3
sda5
sda6
sda7
sda8
sdb
sdb1
sg0
sg1
sg2
shm
snapshot
snd
sndstat
sr0
stderr
stdin
stdout
tty
tty0
tty1
tty10
tty11
tty12
tty13
tty14
tty15
tty16
tty17
tty18
tty19
tty2
tty20
tty21
tty22
tty23
tty24
tty25
tty26
tty27
tty28
tty29
tty3
tty30
tty31
tty32
tty33
tty34
tty35
tty36
tty37
tty38
tty39
tty4
tty40
tty41
tty42
tty43
tty44
tty45
tty46
tty47
tty48
tty49
tty5
tty50
tty51
tty52
tty53
tty54
tty55
tty56
tty57
tty58
tty59
tty6
tty60
tty61
tty62
tty63
tty7
tty8
tty9
ttyS0
ttyS1
ttyS2
ttyS3
uinput
urandom
usb
vcs
vcs1
vcs2
vcs3
vcs4
vcs5
vcs6
vcs7
vcsa
vcsa1
vcsa2
vcsa3
vcsa4
vcsa5
vcsa6
vcsa7
vga_arbiter
vmci
vmmon
vmnet0
vmnet1
vmnet8
vsock
watchdog
xconsole
zero

So my question is:

How do I setup my mouse correctly in Debian wheezy?