There is a PROPSHEETPAGE pointed to by the m_psp class member of a property. This contains a field pszTitle which contains the the title of the property page. Yoy will need to set the PSP_USETITLE flag in the dwflags of the property sheet to use this. You might give this a try.

The number of threads is limited by the amount of available virtual memory. By default each thread has one megabyte of stack space. This means that you can create at most 2028 threads. To obtain more threads you need to increase your virtual memory or reduce the stack size for each thread. See the CreateThread documentation for addition information.