Table names / mixed case / Postgresql 7.0.3

Hello,

I think I`ve encoutered a problem in postgresql 7.0.3 (Linux). I want to 
be able to access tables, for instance, by typing select * from table. 
And it should be the same, whether the table name is TABLE or Table or 
table. But I found out, that you can create tables with the name TABLE 
or table and so on. Is there a way to fix this ?
Maybe I`m wrong ?

Best regards and
thanks in advance

Mathias