my os is 64 mate and i ticked the box on instalation for 64 .. ive added the path where i have a/d installed and scan but it just wont come up in the boxes ... if i unistall it could you tell me step by step what i need to do please ..like ive said in my earlier posts this is my first go at recording on p.c and my general pc knowledge is limited at best so i dont understand sum of the phrases that most of you veterants are used to! cheers 

so frustaring aswell cause i dont think much of the drum plug in within sonar and i cant realy record any guitars etc till i get sum decent drums/looops down .. cheers

Until you figure it out, you could always try using the included drum synth that comes with Sonar X1 ( Session Drummer ) 
Its stable, has some killer sounds via included the Steven Slate stuff and is very quick to create drum grooves via the 'Step Sequencer"  which is available under the "Views" menu, if you dont find any MIDI loops you like in the 'Browser"  

Go into Windows Explorer and verify with your own eyes that the dll is in the correct folder - i.e. the one you've got set in Sonar to scan.

If it isn't, move it.

We use Addictive here at work and even though we installed it into the Cakewalk folder, it still installs the actual .dll into the c:/Program Files/Steinberg/Vstplugins  location if its 64 bit and if its 32 bit  c:/Program Files (x86)/Steinberg/Vstplugins 
This is the default install location of the plug so you might have it in there even if you had specified another location...try that path in your Sonar X1 vst path scan location.
...assuming this is a Win 7 install

I recently had cause to fire up my old machine as my main DAW is currently out of service, and I was amazed how much crap had been deposited in the Steinberg Folder.

I don't even have one on my new box.

hi sorry bout the delay .. i still cant work out what im doin wrong... ive uninstalled and then reinstalled but what folder do you recommend i install in ? ive tried a few different 1s then added them in the folders to scan but still the plug in doesnt appear in the plug in manager.. please sumone tell me what im doin wrong.. cheers

  re-read post #15 ... that's very likely your answer... cheers!