timeout     10

which gives the timeout in seconds, and

default     0

which defines the default boot option, as the order of the item in the menu list, starting at 0. You can of course see the menu list when you boot, but it is also contained further down in the “menu.lst” file. Linux always keeps a few old kernels around to boot into when it updates the kernel, so your Windows entry will usually be the last in the list. If it is, for example, the fifth entry, you need to replace 0 with 4 (because we start counting at 0).

That is, the preamble of your document should look something like this:

\documentclass{article}
... other packages etc ...
\usepackage{hyperref}
\usepackage{apacite}
\begin{document}
... 

At least, that is the only way it worked for me. When I had apacite
loaded first, LaTeX would hang on the second run, with an error
message along these lines:

! Undefined control sequence.
\hyper@@link ->\let \Hy@reserved@a
...