Computer repairs - bread and butter

Ok, so I repair computers, broadband,Macs,networks - the list goes on. I'd like to call myself a full-time web developer, but in Wanganui that's difficult at best, so I do other stuff. I'm on call basically 24/7 and my business is word-of-mouth with very little advertising - my clients love me even though I'm a grump. It's very rare I'm stumped on what to do in any techy situation. Yesterday I managed to figure out the Xtra (Telecoms Internet Arm) had started really enforcing the 10MB limit for email attachments. 2 clients bombed out sending big files, so after much arsing about and incidental repair work, we got it all sorted. Thanks Xtra, you really are a gem of a company and so GOOD to your customers - all of whom will desert your sinking ship once UFB gets here!