英语高手帮学弟翻译一下，谢谢了

1电脑没有杀毒软件怎么办？
What if there's no anti-virus software in the computer?
2必须得用杀毒软件吗？
Do I have to use anti-virus software?
3我用什么样儿的杀毒软件好一点？
What kind of anti-virus software should I use?

1.What should I do if I don't have an Anti-virus software in my computer?
2.Do you have to use Anti-virus softwares?
3.Which Anti-virus software do you thing is better for me?

1.what's to be done without an anti-virus software?
2.Is an anti-virus software indispensable to computer?
3.what kind of anti-virus software will be suitable for me?

3楼主MLARS的答案比较准确，
5楼主的RENHEBINFEN的也可以

1What if there is no available anti-virus software ?
2Is an anti-virus software necessary?
3 What kind of anti-virus software is better for me to manage?

how hasn't 1 computer killed the poisonous software to manage? 2 must result in with kills the poisonous software? what son 3 do I use to kill the poisonous software