How soon should I bug HR about this internal position I applied for?

I applied internally for another position within the company. Typically, the available positions are posted for 7 days—and after the 7 days you can no longer submit an application.

So this particular position was posted on Sep 26th, 2008 [Friday]. On Sep 29th, 2008 [Monday], I received an email query asking me “What are your questions regarding the position?” I replied with 7 questions, and the HR recruiter replied promptly with answers to my questions.

However, I have not heard from them since. As far as I know, I typically should not bother them again until Monday coming… but how should I ask?

What is the most professional way to bother them to know how/if they are considering my application?