installing compiler

[Eric John]

whenever i try to use ./configure, it says

'checking whether the C compiler (gcc  ) works... no
configure: error: installation or configuration
problem: C compiler cannot create executables.'

my questions are:

1 - how do I get the compiler to work?

2 - why isnt it working, or how do I find out,

3 - how do I get the update icon back in the lower
right corner (I found out what remove <whatever> does)

and

4 - what is the freenode address and irc server for
red hat support issues again, I can't seem to find it

Thanks

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