Hi and welcome to the Forum!
As JA has said there isn't another way to remove this lock other than to restore your iPad. Are you sure that you do have battery charge? When doing the reset like this it will take 20 to 30 seconds of continually holding these buttons in to try to get it working again. Have you tried it for this length of time?
The IPad Forum is a community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the Ipad. There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions you have. If then you cannot find the answer you are seeking then by all means post your question. There are many friendly and informed members here only too willing to help you.
We also have our own App - It is a very simple app to navigate.
Tutorial for our App
iPad Forums App Tutorial
Tutorial on creating posts on the Forum
Creating Posts and Starting New Threads - How To
Reading the IPad manual is a great place to start so please download a copy of these.
3 very informative threads from which you will learn many tips and shortcuts for the IPad.
iOS5 Tips and Tricks
Easy pictorial shortcuts & Helpful places. - For People new to the iPad.
We have rules like any Community so please read these also
Forum rules - everybody please read!!
Once again we welcome you here and are so pleased you have joined us!