I did a mistake....

[yoy1zoz2mom3]

I accidently made button 1 (for selecting) into sesnsor net too.

IS there anyway of accessing options and changing it without clicking?

[Industrial Miner]

Go to the options file in your .techniclauncher/ whatever pack you use / and edit that file. You'll see lots of numbers at the keys. If you want to change a key to the MOUSE 1 for attacking, you'll need this key_key.attack:-100

For using, you'll need this key_key.use:-99

Unless you're talking about a mod like Computercraft and then I don't know it.