These things are scarcer than hens teeth. Seems they are a consumable product with the battery and may have run their production into the ground.
I know these show out of stock, but they may be able to help in sourcing the stylus.
http://www.mundocorp.com/shopexd.asp?id=3094Here is a list of models that use the same stylus
http://www.mundocorp.com/shopdisplayproducts.asp?search=Yes&page=1&sppp=500Gateway part number for the stylus pen: 8009550, 8015767
Found these using the FRU number QNDAM000805001 from the gateway support page
http://www.notebookparts.com/products/description.php?II=26816http://www.cygnussupply.com/search.php?part_num=QNDAM000805001&manufacturer=Gatewayhttp://www.skyline-eng.com/index.cfm?fuseaction=product.display&Product_ID=6548