In XP's Windows Update applet, click Review your update history on the left and look for an entry with the Knowledgebase (KB) number 958644 (see the screen above).If you have trouble downloading or installing this or any other Windows update, see Scott Dunn's information on troubleshooting Windows Update.n Vista, you can make sure you've got this update by pressing the Windows key, typing Windows Update, and pressing Enter. Click View update history in the left pane and look for an entry labeled Security Update for Windows Vista (KB958644) and dated 10/23/2008.
A V block is a device used to hold a round piece of stock secure. Typically used in drilling and machining processes, the V block offers the round piece of wood or steel stock in a cradle-like bed of support. The V block is then able to be placed in a vice or clamp and secured to further steady the work piece.
C blocks are blocks that take the shape of C's. Also known as Wrap blocks, these blocks loop the blocks within the Cs or check if a condition is true. There are five C blocks, and they can be found in the Control category. C blocks can be bumped at the bottom, or capped.