You can check rebate status
online here.
I mailed mine on August 28. The website shows that my application was received on September 5, and I should allow 4 to 6 weeks for the check - well within the 8 week window.
On the subject, I would like to give Compaq and thumbs up for their excellent technical support of thie product. On three calls, all made late at night or weekends, a friendly, technically competent CSR resolved my concern.
This is DEFINATELY one of the top 10 hot deals of the year for me (99.99 in-store, minus 50 MIR).