[asniex]

I need to configure the phpinfo file . How can i do that ? I have to change the upload limit to 25mb . Please help me out

[ShocK]

You mean php.ini? It can't be changed, I think it's set at 2mb, much higher if you upgrade
http://www.000webhost.com/upgrade

[lobrc]

Use FTP where there's no limit.

[enigma1]

It's not a good solution to setup a huge upload limit regardless if you have a premium account or not. I assume you need to upload large files on some circumstances in which case you could setup some client script (with js and ajax for instance) to do that, uploading file segments progressively.