I think in all honesty we are all in the same situation. With all the PC add ons that ALL of us have it is close to impossible to keep the wireing system in any semblance of order. All the manufactures seem to have different lengths and thicknesses of cableing and the cable tidies that I have seen are ok for 2 core cables but not for the 3 core that is used on most PC's along with the add ons.
To me there is only 2 answers;first goe wireless with all add ons {and have the trials of trying to get it all to work with one another {be prepared for MANIC Depression to set in within 30 minutes of starting on this road} or do like most of us do and either leave the mess behind your PC until something breaks down or like Marulous be brave and resort to half a day of pulling everything out and trying to put it back the way it looked when you only had just a PC and monitor wire. Failing all else whenever you get that bored of reading the Great postings and advice get the wife/husband/boyfriend/girlfriend to do it while you go out to take more photos
Regards
Sparhawk