1) Way to change default PIE cache directory to somewhere in mini SD
---Storing temporary internet files in IE hogs up precious memory on the phone. Here's how I avoid losing my memory to temporary internet files (since I do a lot of browsing).
HKCU/Software/Microsoft/Windows/CurrentVersion/Explorer/Shell Folders
Values -> Cache
Change value data to point to your Storage Card (if you have enough space, else edit your cache size limit).
-Credit geos to chrisc28
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2) Way to change default store directory of e-mails to mini SD
---Create the folders on your Storage Card '\Storage Card\Inbox' and the subfolder '\Attachments'
Import the registry keys as below. (try Registry Workshop and you can connect to Mobile device registries from your PC and import reg files. This saves having a Registry editor installed on the phone and typing on the device). If you are entering these keys manually rather than importing a *.reg file only use single slashes for the paths. Restart your device after doing this.
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\MAPI]
"AttachPath"="\\Storage Card\\Inbox\\Attachments"
"PropertyPath"="\\Storage Card\\Inbox"
This not only puts email attachments onto your storage card but puts all the *.mpb files which make up items in your Inbox onto the storage card too.
Credit goes to wired&connected.
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3) Same for the pictures and videos (default directory in SD instead of My Pictures)
---When you first put a MiniSD to the SDA/WM5 it will recognise and next time you start the Camera appliction, it will ask you if you want to change default directory to under Removable Storage card, just say Yes. Or you can do it from the options of camera program as well.
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4) Being able to assign ringtones directly from SD without any modification
---Drop them (*.mp3) into the root of the storage card, and remember you can downsample them using any mp3 editor/converter.
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5) Set the "Contacts" in SD
---Pending
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Sources:
http://www.modaco.co...howtopic=230975