Help Power button to end call is missing from my Desire

[sandeepg]

I've been scouring the web a solution to this but can't seem to find it anywhere. I know it's possible to end a phone call on the Desire by pressing the power button after enabling it in settings. But when I go to Settings/Accessibility I get a pop-up message saying,

'No accessibility related application found. You can download a screen reader for your device from Android Market. Click OK to install the screen reader.'

If I press 'Cancel' I'm in the accessibility settings with a single grayed-out 'Accessibility' option. But no other options are available.
Weirdly, if I search for it (after allowing 'Settings' to be searched) I do get a result in Settings/Accessibility labelled 'Accessibility. HTC global search'. If I click on it though I'm back in the Accessibility setting section.

I'm running 2.2 on a Desire on the Vodafone (UK) network (not rooted).

Any help would be much appreciated!

 

[kartnite]

From what I know, the "power button to end call" feature is present in the Nexus One and NOT in the Desire.

Alternatively, I guess you 'can' get that option in the Desire by running a custom ROM.