Well since I've already used the mod manager, I think that the assets.xml file is availiable to edit without the need for "1404 explorer".
I've seen it around the anno 1404 directory already.
I never knew about guids.txt - after reading your description and 'googling' it, it appears to be some kind of list of identity codes used to specify items in the assets.xml.... is that right?
I've used the guids.txt and the assets file and found this line of code....
<Asset>
<Template>Markethouse</Template>
<Values>
<Blocking />
<BoidSpawner>
<BoidAreaSize>14</BoidAreaSize>
</BoidSpawner>
<BuildCost>
<MoneyCost>200</MoneyCost>
<ProductCost>
<Wood>2000</Wood>
<Tools>3000</Tools>
</ProductCost>
</BuildCost>
<Building>
<BuildingLevel>Peasant</BuildingLevel>
</Building>
<Danger />
<Hitpoints>
<FireEffect>
</FireEffect>
</Hitpoints>
<Influence>
<InfluenceRadius>20</InfluenceRadius>
</Influence>
<InfoLayer />
<KIModule />
<MaintenanceCost>
<ActiveCost>10</ActiveCost>
<InactiveCost>10</InactiveCost>
</MaintenanceCost>
<Mesh>
<ShowGlyph>1</ShowGlyph>
</Mesh>
<Object>
<Variations>
<Item>
<Filename>data\graphics\buildings\public\north\market_building01\n_market_building01.cfg</Filename>
</Item>
</Variations>
<NamePool>OccidentWarehouse</NamePool>
</Object>
<Selection />
<Standard>
<Name>Markethouse01</Name>
<GUID>35100</GUID>
</Standard>
<TradingPrice />
<Upgradable>
<UpgradeGUID>35110</UpgradeGUID>
</Upgradable>
<Warehouse />
</Values>
</Asset>
So by the sounds of it. All I need to do is change the <InfluenceRadius>20</InfluenceRadius> to something like....
<InfluenceRadius>30</InfluenceRadius>...
I'll try it when I get home from work. - Thanks
- didn't want to come across too ignorant 
@dodthedj
