Who is like me located in a non-muslim-country must miss the Azan and often enough also a Mosque visite as no Mosque near you.
Here i found a great Freeware for your PC to remind your Prayertimes
Salaat Time - Freeware
Salaat Time is a FREE multi-function Islamic application that calculates the prescribed five daily Muslim prayer times as well as Qiblah direction for anywhere in the world. It rests in the system tray and at the prescribed times the Athan sounds and/or displays visual alerts. In addition you have a perpetual side-by-side monthly Hijri / Gregorian calendar which highlights important Islamic dates and moon phases
Screenshots and Download (on the Screenshot page) HERE
http://www.salaattime.com/screenshots.html