Strange file name after installing solr

[Bac Hoang]

         apache-solr-1.4.1Hello folks,

I'm very new user to solr. Please help
What I have in hand: 1) apache-solr-1.4.1; 2) Geronimo

After installing solr.war using Geronimo administration GUI, I got a 
"strange" file, under the 
opt/dev/ofwi-geronimo2.1.6/repository/default/*solr/1287558884961/solr-1287558884961.war. 
*Is this alright or any thing abnormal? My Geronimo says that solr 
running status, but when start, I got an error 
"java.lang.RuntimeException: Can't find resource 'solrconfig.xml' in 
classpath or 'solr/conf/', cwd=/opt/dev..."

Thanks indeed for your time

With regards,
Bac Hoang