Binary Conversion <^>(Works Both Ways)<^>

Hi people! This is my first submission so please be gentle! It’s a simple little prog to convert binary to decimal and back again. Had to make the binary to decimal bit for college. Works with abnormally huge numbers. I couldn’t find any converters that worked with huge numbers on PSC. But then again I only looked for 5 seconds. Really Happy with this code cos it only took me 2 days to work out how to get it to go back to Binary. Might change it later and add Hex and Oct but I wanna up load it before I go home. + Add More Comments that make sense. It may seem a bit dull (I wouldn’t download it), but I’m very pleased with it so I’m gonna put it up anyway. Plz comment cos its my first code. Even if you don’t download it just comment! Thx Enis