Htc hd2 hints 40 : Save Some Space in Phone Storage Memory

Use file explorer (Enable "show all system files") and delete the following or move them to storage card if you need them:

a. Folder: My Device\Music
Delete the sample song folders.

e. Folder: My Device\Program files
Delete the folder "copilot" if you don't use it.

g. Folder: My Device\Windows\
Delete Opera 9.exe (rom version will replace it don't worry)

h. Folder: My Device\Windows\
Delete OperaL.exe (rom version will replace it don't worry)

i. Folder: My Device\Windows\Start Menu\Programs
Delete which ever shortcut you don't need.

j. Folder: My Device\Windows\Rings
Delete the Ring tones you don't use or move them to storage.

Htc hd2 hints 39 : Preferences Editor in Opera

Open Opera and type "opera:config" in the address bar. You'll then be in the config page.

Htc hd2 hints 38 : Disable Unwanted Folders From Showing in HTC Album

Don't you find it annoying that HTC Album Shows lots of images you don't need to see when you select Albums like GPS poi icons? Now you can tell HTC Album to ignore certain folders.
Go to HKEY_LOCAL_MACHINE/Software/HTC/HTCAlbum/Ignored with Resco Registry Editor and add a NEW STRING VALUE
Eg if there is iGO8 in the root of the Storage Card you would create a NEW STRING VALUE with Value name iGO8 and Value Data \Storage Card\iGO8
This will include all subfolders inside the iGO8 folder. Save and reset.