Well that got me alot further, than I would of gotten, thanks. Here is my new script, but I don't seem to have the float field connected to the amount of frames, here it is:

global proc myShaveWriteProcedure()
{
int $f;

for ($f = 1; $f <= 1000; $f++) { currentTime $f;
shaveWriteRib -frame $f ("c:\\file." + $f + ".rib"); }

}

global proc myShaveWindow()
{

window -height 90 -width 320;
rowLayout -columnWidth3 80 100 80 -height 64 -numberOfColumns 3 -width 312;
text -height 17 -label "Frames" -width 80;
floatField -height 23 -maxValue 1000 -minValue 1 -value 1 -width 100;
button -command "myShaveWriteProcedure" -height 28 -label "Rib It" -width 80;
}
showWindow;