how to install 3rd party apps via HTC Sync?

[vsangolli]

i have downloaded htc sync 2.0.4 from htc support,
installed it n it recognised my HTC MAGIC on my pc.
still i have not been able to install any .apk files to my phone.
what might be the reason for this.
the icon picture of those .apk files r black n white picture.
when i try to install it via installer app it says " 80004005 unspecified error"
ppl i need help with this ASAP

 

[Ziani]

You need to enable 'Unknown Sources' by going into settings-applications then check box (this allows 3rd party apps to be installed) This is for the Hero so I presume its the same for HTC Magic.

Hope this helped