I'm not saying it's not possible, I'm just saying don't underestimate the amount of work that has to be done; it's quite likely vastly more than has already gone in; and if you want the SD (its only on-board storage past internal flash) and reliability, a new file system might even be needed! (Most SD cards, unless you buy the really nice expensive ones, have wear-leveling algorithms based around FAT.)
Google search utility tweaked Version 1.80 of Searchy has an improved user interface to cope with RISC OS Select's rounded buttons among other tweaks. Discuss this. Published: 1 Jan 2009