Reg settins according to this post:
[HKEY_CURRENT_USER\Security\Software\Microsoft\Marketplace]
"DownloadLocation"="\\Windows\\WMMarketplace.cab"
"IsInstalled"=dword:00000001
"MarketInstallLocation"="\\Windows\\WMMarketplaceFullClient.exe"
"BootStrapInstalledPath"="\\Windows\\WMMarketplaceFullClient.exe"
"FedDocURLChkDate"=hex:***********
"DeviceToken"=***********"
"DeviceTokenTimeSkew"=hex:******
"DeviceTokenExpireTime"=hex:***********
"DeviceTokenCreatedTime"=hex:**********
"DevicePuid"="*************"
"LiveIdDeviceRegisterEndpoint"="https://login.live.com/ppsecure/DeviceAddCredential.srf"
"LiveIdAuthEndpoint"="https://login.live.com/liveidSTS.srf"
"DeviceGuid"="****************"
"EulaAccepted"=dword:00000001
"WebServiceUpdateServer"="https://client.marketplace.windowsmo...tstrap/02/2009"
[HKEY_LOCAL_MACHINE\SYSTEM\Versions]
"Aku"=".5.3.00"
We can launch marketplace from an app by execute "\Windows\WMMarketplace.exe", but no
parameters possible? See here